Colorectal cancer screening and surveillance practices by primary care physicians: results of a national survey

Evaluation of fecal occult blood testing for rapid diagnosis of invasive diarrhea in young children

Antimicrobials are only indicated in acute childhood diarrhea if it is invasive or persistent. Rapid screening for invasive diarrhea can therefore inform treatment decisions but pathogen identification by culture is slow, expensive and cumbersome. This study aimed to assess the diagnostic utility of stool microscopy and immunochromatographic fecal occult blood test (FOBT) kits for identifying invasive or potentially invasive diarrhea in Ibadan, Nigeria. Fecal specimens from 46 children under 5 years old with diarrhea, collected as part of ongoing case-control studies, were subjected to stool microscopy for erythrocytes and leucocytes, and FOBT using the innovator's product and four locally procurable generic immunochromatographic kits, each according to manufacturers' instructions. Stool specimens were cultured for enteric bacterial pathogens using standard procedures. Presumptive pathogen isolates were identified biochemically and by PCR, and then confirmed by whole genome sequencing. Shigella, enteroinvasive Escherichia coli and Yersinia, pathogens that invariably cause invasive diarrhea, were detected in five of 46 specimens. Occult blood detection by microscopy was 55.6% sensitive and 78.4% specific, while the innovator's FOBT product was respectively 62.5% and 81.6% sensitive and specific compared to strict invasive pathogen recovery. Microscopy and FOBT testing were less sensitive in identifying specimens that contained pathogens that do not always elicit invasive diarrhea. Generic FOBT tests compared well with the innovator's product. Microscopy and FOBT testing have some value for delineating likely invasive diarrheas. They could inform treatment and serve as early warning indicators for dysentery outbreaks in resource limited settings. Inexpensive, generic FOBT kits that are locally procurable in Nigeria performed as well as the innovator's product.

Use of Fecal Occult Blood Testing as a Diagnostic Tool for Clinical Indications: A Systematic Review and Meta-Analysis

INTRODUCTION

Fecal occult blood tests (FOBTs) are validated only for colorectal cancer (CRC) screening, but are commonly used as a diagnostic test in other clinical settings. We performed a systematic review to assess performance characteristics of FOBT as a diagnostic test for clinical indications.

METHODS

Bibliographic databases were searched to identify studies in adult patients with a specific gastrointestinal symptom or condition who underwent FOBT and a reference test and provided data on diagnoses. Our primary end point was sensitivity. Risk of bias was assessed with the QUADAS-2 tool.

RESULTS

Twenty-two studies met the inclusion criteria: 12 in iron deficiency anemia (IDA) (5 fecal immunochemical (FIT) and 7 guaiac based), 8 in ulcerative colitis (FIT), and 2 in acute diarrhea (guaiac based). Only 2 studies had low risk of bias on all domains of the QUADAS-2. On meta-analysis, FOBT had a sensitivity of 0.58 (95% confidence interval [CI] 0.53-0.63) and a specificity of 0.84 (95% CI 0.75-0.89) in predicting presumptive causes of IDA at endoscopy, with comparable results for guaiac-based tests and FIT. Sensitivity was higher for CRC (0.83) than non-CRC lesions (0.54). FIT had a sensitivity of 0.72 (95% CI 0.57-0.84) and a specificity of 0.80 (95% CI 0.67-0.89) in predicting endoscopic activity in UC. Sensitivities of FOBT for positive stool culture in acute diarrhea were 0.38 and 0.87.

DISCUSSION

Sensitivity of FOBT is poor for IDA: 42% of patients with identifiable causes of IDA had false-negative FOBT. Our results did not show acceptable performance characteristics for FOBT to guide decisions regarding endoscopic evaluation and do not support its use in IDA.

Knowledge and Awareness of Colorectal Cancer Early Warning Signs and Risk Factors among University Students in Jordan

In the present study, we aimed to assess the level of awareness regarding CRC warning signs and risk factors among undergraduate students. A cross-sectional survey using standardized questionnaire developed by the Cancer Research Center in the UK was carried out in three different public universities in Jordan including Jordan University of Science and Technology, Yarmouk University, and AL al-Bayt University over a 5-month period. Volunteers were asked about their knowledge regarding CRC symptoms, risk factors, and their behaviors regarding seeking medical advice. Findings revealed that response rate was 80.1%. Vast majority of responders were female (70.9%) and 18.2% of them were studying medical-related specialties. Regarding CRC symptoms, 14.3% of responders experienced poor knowledge, 52.9% have fair knowledge, and 32.8% have good knowledge. Abdominal pain was the most recognized warning signs where 70.8% of responders could recall it. In addition, risk factors awareness was lower than warning signs awareness. About 36.1% of responders have poor knowledge, 47.4% had fair knowledge, and 16.5% had good knowledge. Unhealthy diet was the most recognized risk factor where 32.3% of responders could recall it. Moreover, females were more aware regarding CRC symptoms. Similar findings were obtained for participants who were aged 20 years or more and for those who had previous experience of cancer. Students who were studying medical-related specialties were more aware of both CRC symptoms and risk factors than those who studying other specialties. Furthermore, regarding time to seek medical attention we found that 60.6% of volunteers would seek medical advice within 1 week of noticing CRC symptoms and 12% would seek it within 2 weeks. The mean duration for seeking medical advice was found to be 1.9 weeks. University students' awareness level of CRC is poor, and therefore, extended attention should be attempted to enhance the awareness of CRC via continuous education programs, lectures, or campaigns to encourage the early detection CRC.

Improving Internal Medicine Residents' Colorectal Cancer Screening Knowledge Using a Smartphone App: Pilot Study

BACKGROUND

Colorectal cancer (CRC) is the third most common type of cancer and the second leading cause of cancer death in the United States. About one in three adults in the United States is not getting the CRC screening as recommended. Internal medicine residents are deficient in CRC screening knowledge.

OBJECTIVE

The objective of our study was to assess the improvement in internal medicine residents' CRC screening knowledge via a pilot approach using a smartphone app.

METHODS

We designed a questionnaire based on the CRC screening guidelines of the American Cancer Society, American College of Gastroenterology, and US Preventive Services Task Force. We emailed the questionnaire via a SurveyMonkey link to all the residents of an internal medicine department to assess their knowledge of CRC screening guidelines. Then we designed an educational intervention in the form of a smartphone app containing all the knowledge about the CRC screening guidelines. The residents were introduced to the app and asked to download it onto their smartphones. We repeated the survey to test for changes in the residents' knowledge after publication of the smartphone app and compared the responses with the previous survey. We applied the Pearson chi-square test and the Fisher exact test to look for statistical significance.

RESULTS

A total of 50 residents completed the first survey and 41 completed the second survey after publication of the app. Areas of CRC screening that showed statistically significant improvement (P<.05) were age at which CRC screening was started in African Americans, preventive tests being ordered first, identification of CRC screening tests, identification of preventive and detection methods, following up positive tests with colonoscopy, follow-up after colonoscopy findings, and CRC surveillance in diseases.

CONCLUSIONS

In this modern era of smartphones and gadgets, developing a smartphone-based app or educational tool is a novel idea and can help improve residents' knowledge about CRC screening.

Knowledge, Attitudes, and Practices Related to Preoperative Chemoradiotherapy in Rectal Cancer Patients

Background. The aim of this study is to assess the knowledge, attitudes, and practices related to pre-CRT in patients of stage II/III rectal cancer. Materials and Methods. Questionnaires regarding the knowledge, attitudes, and practices of pre-CRT were mailed to 145 rectal cancer patients in II/III stage between January 2012 and December 2014, and 111 agreed to participate and returned completed questionnaires to the researcher. Logistic regression model was used to compare sociodemographic characteristics, knowledge, and attitude with practice, respectively. Results. A total of 145 patients were approached for interview, of which 111 responded and 48.6% (54) had undergone pre-CRT. Only 31.5% of the participants knew that CRT is a treatment of rectal cancer and 39.6% were aware of the importance of CRT. However, the vast majority of participants (68.5%) expressed a positive attitude toward rectal cancer. Multivariate logistic regression analysis revealed that knowledge level (p = 0.006) and attitudes (p = 0.001) influence the actual practice significantly. Furthermore, age, gender, and income were potential predictors of practice (all p < 0.05). Conclusion. This study shows that, despite the fact that participants had suboptimal level of knowledge on rectal cancer, their attitude is favorable to pre-CRT. Strengthening the professional health knowledge and realizing the importance of attitudes may deepen patients' understanding of preoperative therapy.

Physician Recommendations for Follow-Up of Positive Fecal Occult Blood Tests

Following a positive fecal occult blood test (FOBT), physician recommendation of complete diagnostic evaluation (CDE) is an important first step to ensure identification and treatment of preinvasive or invasive colorectal cancer. Physicians may not recommend CDE, however, potentially compromising the effectiveness of colorectal cancer screening programs and the quality of care for individual patients. The authors used a theoretical model of health behavior and two national physician samples to explore factors associated with recommendations for CDE. Overall, 63 percent of the sample of physicians providing primary care and 76 percent of the gastroenterologist and general surgeon sample reported recommending CDE. Variables representing the theoretical model constructs of physician background, experience, and practice patterns; practice environment; physician psychosocial representations; and patient characteristics were significantly associated with recommendations of CDE. Development of interventions to improve recommendations of CDE is an important area for future research.

Physician Recommendation for Colorectal Cancer Screening by Race, Ethnicity, and Health Insurance Status Among Men and Women in the United States, 2000

In this study, the authors examined whether men and women in the United States had received a physician recommendation to get a colorectal cancer screening test, by race, ethnicity, and health insurance status using data from the 2000 National Health Interview Survey. Among men and women who had had a doctor visit in the past year but who had not had a recent fecal occult blood test, about 94.6% (95% CI 94.0-95.2) reported that their doctor had not recommended the test in the past year. African Americans, Hispanics, and American Indians/Alaska Natives were less likely to report receiving a recommendation for endoscopy compared to Whites.

Use of fecal occult blood test in hospitalized patients: survey of physicians practicing in a large central Canadian health region and Canadian gastroenterologists

BACKGROUND

Although the fecal occult blood test (FOBT) was developed for colorectal cancer screening in the outpatient setting, it continues to be used among hospitalized patients. No previous study has evaluated the knowledge, beliefs and attitudes of practicing physicians on the use of FOBT among hospitalized patients and compared practices among physicians with different medical specialty training.

OBJECTIVE

To survey physicians in the Winnipeg Regional Health Authority (WRHA) and Canadian gastroenterologists (GIs) on the use of FOBT in hospitals.

METHODS

A survey was distributed by e-mail to internists (n=198), emergency medicine (EM) physicians (n=118), general surgeons (n=47) and family medicine (FM) physicians with admitting privileges (n=29) in the WRHA. Canadian GIs were surveyed through the membership database of the Canadian Association of Gastroenterology (CAG) (n=449). The survey included items regarding demographics of the respondents and their current use of FOBT in hospitals.

RESULTS

Response rates ranged from 18% among CAG members to 69% among FM physicians in the WRHA. General internal medicine, general surgeon and GI respondents were less likely to order a FOBT and less likely to believe that an FOBT was useful in assessing emergency room or hospitalized patients when compared with FM and EM respondents (P<0.001). The most common indications for ordering a FOBT were black stools and anemia with and without iron deficiency. Two-thirds of EM physicians preferred point-of-care testing rather than laboratory reporting of FOBT.

CONCLUSIONS

The present survey suggests that FOBTs are commonly used in hospitals by EM and FM physicians for indications such as anemia and black stools.

Fecal occult blood testing as a diagnostic test in symptomatic patients is not useful: a retrospective chart review

BACKGROUND

The fecal occult blood test (FOBT) is a screening tool designed for the early detection of colorectal cancer in primary care. Although not validated for use in hospitalized patients, it is often used by hospital physicians for reasons other than asymptomatic screening.

OBJECTIVE

To profile the in-hospital use of the FOBT and assess its impact on patient care.

METHODS

Patient charts were retrospectively reviewed for all FOBTs conducted over a three-month period in 2011 by the central laboratory supporting the three acute care campuses of Hamilton Health Sciences (Hamilton, Ontario).

RESULTS

A total of 229 patients underwent 351 tests; 52% were female and the mean age was 49 years (range one to 104 years). A total of 80 (34.9%) patients had at least one positive test. The most common indications for testing were anemia (51.0%) and overt gastrointestinal bleeding (19.2%). Only one patient had testing performed for asymptomatic colorectal cancer screening. In only 20 (8.7%) cases medications were modified before testing and diet was modified in only 21 (9.2%) cases. Most patients (85.2%) were taking one or more medications that could result in a false-positive result. Only 18 (7.9%) patients had a digital rectal examinations documented, of which seven were positive. All patients with a positive digital rectal examination underwent endoscopic procedures that revealed a source of bleeding. Among 44 patients with overt gastrointestinal bleeding, 12 (27.3%) had endoscopic investigations delayed to await results of the FOBT. Four patients were referred despite a negative FOBT due to a high degree of suspicion of gastrointestinal bleeding.

CONCLUSIONS

The FOBT is often used inappropriately in the hospital setting. Confounding factors, such as diet and medication use, which may lead to false positives, are often ignored. Use of the FOBT in-hospital may lead to inappropriate management of patients, increased length of stay and increased direct medical costs. Use of the FOBT should be limited to validated indications only.

Antithrombotic drug does not affect the positive predictive value of an immunochemical fecal occult blood test

BACKGROUND AND AIM

Antithrombotic drugs may affect the diagnostic performance of immunochemical fecal occult blood test (iFOBT) for colorectal cancer (CRC) screening. The aim of the present study was to assess the effect of antithrombotic drugs on the diagnostic performance of iFOBT.

METHODS

We analyzed 1016 patients who underwent colonoscopy for positive iFOBT. Patients were classified as follows: patients who had advanced neoplasms detected and those who did not; patients who had cancers detected and those who did not; patients who had any neoplasms detected and those who did not. We compared the following factors between two paired groups: sex, age, endoscopists' experience, and antithrombotic drug usage.

RESULTS

A total of 139 patients were taking antithrombotic drugs (13.7%). Advanced neoplasms, cancers, and any neoplasms were detected in 196 (19.3%), 59 (5.8%), and 490 (48.2%)patients, respectively. There were no higher detection rates in the antithrombotic drug (-) group than in the (+) group (advanced neoplasms: 19.3% vs 19.4%, P=1.000; cancers: 5.8% vs 5.8%, P=1.000; any neoplasms: 48.4% vs 47.5%, P=0.856). Multivariate logistic regression analysis revealed that none of aspirin, warfarin, or other antithrombotic drugs was a significant factor for advanced neoplasms (95% CI 0.350-1.216, P=0.179; 95% CI 0.421-1.899, P=0.772; 95% CI 0.323-1.810, P=0.764, respectively). As to cancers and any neoplasms, no antithrombotic drug also proved to be a significant factor.

CONCLUSION

The present study demonstrated that the positive predictive value of iFOBT was not affected by ongoing antithrombotic therapy.

Classification tree analysis to enhance targeting for follow-up exam of colorectal cancer screening

BACKGROUND

Follow-up rate after a fecal occult blood test (FOBT) is low worldwide. In order to increase the follow-up rate, segmentation of the target population has been proposed as a promising strategy, because an intervention can then be tailored toward specific subgroups of the population rather than using one type of intervention for all groups. The aim of this study is to identify subgroups that share the same patterns of characteristics related to follow-up exams after FOBT.

METHODS

The study sample consisted of 143 patients aged 50-69 years who were requested to undergo follow-up exams after FOBT. A classification tree analysis was performed, using the follow-up rate as a dependent variable and sociodemographic variables, psychological variables, past FOBT and follow-up exam, family history of colorectal cancer (CRC), and history of bowel disease as predictive variables.

RESULTS

The follow-up rate in 143 participants was 74.1% (n = 106). A classification tree analysis identified four subgroups as follows; (1) subgroup with a high degree of fear of CRC, unemployed and with a history of bowel disease (n = 24, 100.0% follow-up rate), (2) subgroup with a high degree of fear of CRC, unemployed and with no history of bowel disease (n = 17, 82.4% follow-up rate), (3) subgroup with a high degree of fear of CRC and employed (n = 24, 66.7% follow-up rate), and (4) subgroup with a low degree of fear of CRC (n = 78, 66.7% follow-up rate).

CONCLUSION

The identification of four subgroups with a diverse range of follow-up rates for CRC screening indicates the direction to take in future development of an effective tailored intervention strategy.

Does acetylsalicylic acid or warfarin affect the accuracy of fecal occult blood tests?

BACKGROUND

Current guidelines for screening of colorectal cancer do not offer specific recommendations for cessation of antithrombotic agents prior to fecal occult blood test (FOBT).

AIM

To asess the accuracy of FOBT in patients taking acetylsalicylic acid (ASA) or warfarin.

METHODS

A literature search was conducted for studies that investigated the accuracy of FOBT in patients taking ASA and warfarin. The primary outcome was the pooled relative risk (RR) for true positive FOBT for detecting significant colonic neoplasia in patients taking ASA or warfarin compared with controls. The secondary outcome was a pooled RR for true positive in guaiac FOBT (g-FOBT) compared with immunochemical FOBT (i-FOBT).

RESULTS

Five observational studies included 759 patients taking ASA and 1652 control subjects. In patients taking ASA, pooled RR for true positive FOBT was 0.82 (95% confidence interval [CI] 0.73-0.93, P=0.0009), pooled RR for true positive g-FOBT was 0.69 (95% CI 0.60-0.79, P<0.0001), whereas pooled RR for true positive i-FOBT was 1.013 (95% CI 0.81-1.30, P=0.8182). Five observational studies included 806 patients taking warfarin and 10 338 control subjects. In patients taking warfarin, pooled RR for true positive FOBT was 1.559 (95% CI 1.349-1.801, P<0.0001).

CONCLUSION

The results of our meta-analysis demonstrate that in patients taking ASA, there is a decrease in the positive predictive value (PPV) of g-FOBT but no significant difference in the PPV of i-FOBT compared with control subjects for detecting significant neoplasia. In patients taking warfarin, the PPV of FOBT was increased for detection of colorectal cancer compared with control subjects.

Inappropriate use of the faecal occult blood test outside of the National Health Service colorectal cancer screening programme

OBJECTIVE

The faecal occult blood test (FOBT) is the screening test validated for use in the National Health Service (NHS) Bowel Cancer Screening Programme (BCSP) after trials demonstrated a 16% reduction in colorectal cancer-specific mortality. FOBT is not validated for use outside the BCSP. The aim was to investigate the number of FOBTs performed outside of the NHS BCSP at a single centre.

METHODS

All FOBTs performed over 1 year were identified. Basic patient demographics, requesting physician and FOBT results were obtained. Referrals and outcomes of the investigation following the FOBT were collected.

RESULTS

A total of 758 FOBTs were requested in 701 patients (352 female; median age 69; range 16-99). The majority (91%) were requested by general practitioners. A total of 515 out of 758 tests (68%) were performed in patients outside the NHS BCSP age range. Thirty-seven out of 86 positive FOBTs were investigated, diagnosing four rectal cancers and two polyps. Forty-nine out of 87 patients with a positive FOBT were not investigated further by the requesting physician or the test repeated. Of the remaining 672 FOBTs, 615 were negative and 57 were either incomplete or unsuitable for analysis. A total of 111 patients (18%) were referred to hospital and 105 of these had FOBT performed as part of the referral process.

CONCLUSION

Our study demonstrates significant misuse of the FOBT outside the NHS BCSP. Inappropriate use leads to false positives and exposes patients to unnecessary risk. False negatives provide reassurance to patients who may have symptoms that should be investigated. The FOBT should not be available to physicians in either primary or secondary care and be restricted to NHS BCSP.

Does access to a colorectal cancer screening website and/or a nurse-managed telephone help line provided to patients by their family physician increase fecal occult blood test uptake?: A pragmatic cluster randomized controlled trial study protocol

Background

Fecal occult blood test screening in Canada is sub-optimal. Family physicians play a central role in screening and are limited by the time constraints of clinical practice. Patients face multiple barriers that further reduce completion rates. Tools that support family physicians in providing their patients with colorectal cancer information and that support uptake may prove useful. The primary objective of the study is to evaluate the efficacy of a patient decision aid (nurse-managed telephone support line and/or colorectal cancer screening website) distributed by community-based family physicians, in improving colorectal cancer screening rates. Secondary objectives include evaluation of (dis)incentives to patient FOBT uptake and internet use among 50 to 74 year old males and females for health-related questions. Challenges faced by family physicians in engaging in collaborative partnerships with primary healthcare researchers will be documented.

Methods/design

A pragmatic, two-arm, randomized cluster controlled trial conducted in 22 community-based family practice clinics (36 clusters) with 76 fee-for-service family physicians in Winnipeg, Manitoba, Canada. Each physician will enroll 30 patients attending their periodic health examination and at average risk for colorectal cancer. All physicians will follow their standard clinical practice for screening. Intervention group physicians will provide a fridge magnet to each patient that contains information facilitating access to the study-specific colorectal cancer screening decision aids (telephone help-line and website). The primary endpoint is patient fecal occult blood test completion rate after four months (intention to treat model). Multi-level analysis will include clinic, physician and patient level variables. Patient Personal Health Identification Numbers will be collected from those providing consent to facilitate analysis of repeat screening behavior. Secondary outcome data will be obtained through the Clinic Characterization Form, Patient Tracking Form, In-Clinic Patient Survey, Post-Study Follow-Up Patient Survey, and Family Physician Survey. Study protocol approved by The University of Manitoba Health Research Ethics Board.

Discussion

The study intervention has the potential to increase patient fecal occult blood test uptake, decrease colorectal cancer mortality and morbidity, and improve the health of Manitobans. If utilization of the website and/or telephone support line result in clinically significant increases in colorectal cancer screening uptake, changes in screening at the policy- and system-level may be warranted.

Trial registration

Clinical trials.gov identifier NCT01026753

Fecal occult blood testing instructions and impact on patient adherence

INTRODUCTION

Although the physician's role with patients is crucial in encouraging FOBT screening, the nature and content of physician-patient discussions about FOBT screening is unclear. As part of a larger study, this paper reports on our analyses of physician beliefs about fecal occult blood testing (FOBT) and strategies they employed to enhance patient adherence. The second aim of this paper is to report on the perceptions of individuals at average risk for colorectal cancer (CRC) in regard to their awareness of the FOBT and their responses to physician recommendations about FOBT screening.

METHODS

The larger study was conducted in urban and rural Manitoba, Canada between 2008 and 2010. We used a qualitative design and conducted semi-structured, audio-recorded interviews with 15 physicians and 27 individuals at average risk for CRC. We included data from 11 family members or friends on their perspectives of FOBT instructions as individuals who were also at average risk for CRC and had their own experiences with CRC screening recommendations.

RESULTS

Despite widespread knowledge of The Canadian Task Force on Preventive Health Care CRC screening guidelines, physician attitudes, behaviors, and instructions were not uniform in promoting patient adherence to FOBT screening. Individuals at average-risk for CRC identified that FOBT instructions were confusing and burdensome, which in turn served as a barrier in their adherence to FOBT screening.

CONCLUSIONS

Variation in FOBT instruction counseling in relation to the recommended age of individuals at average risk for CRC, as well as adequate patient preparation affected patient adherence. We recommend uniform or standardized instructions and counseling by health care providers who administer the FOBT kit to patients to promote adherence to recommended CRC screening.

Colorectal cancer screening practise is influenced by ethnicity of medical practitioner and patient

BACKGROUND AND AIM

Colorectal cancer (CRC) screening improves survival and requires appropriate recommendation by general practitioners (GPs). Screening practises may be influenced by barriers related to ethnicity and training.

METHODS

A mail survey assessed GPs' practises and the barriers towards CRC screening. The association of screening practises and demography, including GP ethnicity, medical training and practise characteristics, were evaluated.

RESULTS

Of 212 GPs (median age 54 years, 73% men, 27% Caucasian, 38% foreign graduates), 87% agreed that fecal occult blood test (FOBT) screening improved survival in the average-risk patient. Considerable variations existed in the starting age (40-49 years: 31%; 50 years: 65%) and frequency (1-2 years: 77%; 3-5 years: 22%) of screening. FOBT was used for indications other than screening: anemia (59%), altered bowel habits (54%), abdominal pain (24%), and rectal bleeding (23%), and these were significantly more frequent in Asian GPs independent of medical training. GPs were less likely to recommend screening to immigrants, and most reported that immigrants were less likely to participate. More Asian and Middle Eastern GPs reported a major barrier with FOBT inaccuracy compared with Caucasian GPs (22% vs 9%, P = 0.03; and 27% vs 9%, P = 0.03, respectively).

CONCLUSIONS

Considerable differences existed in GPs' CRC screening practises. Indications for use of FOBT and the subsequent investigation of a positive FOBT also varied according to GPs' ethnicity, independent of medical training. Patient's ethnicity and associated language and cultural barriers may affect screening uptake, which may negatively affect the health of immigrants. Resources and culture-specific interventions are recommended to improve overall screening participation.

Portal hypertensive colopathy and haematochezia in cirrhotic patients: an endoscopic study

BACKGROUND AND STUDY AIMS

In patients with liver cirrhosis, portal hypertensive colopathy (PHC) and anorectal varices (ARVs) are thought to cause lower gastrointestinal (GI) bleeding. In the present work, we studied the diagnostic yield of colonoscopy in cirrhotic patients and haematochezia.

PATIENTS AND METHODS

The current study was conducted on 77 consecutive cirrhotic patients who underwent colonoscopy at Mansoura Emergency Hospital, Egypt, between May 2007 and May 2011. Following rapid evaluation and adequate resuscitation, a thorough history was obtained with complete physical examination including digital rectal examination and routine laboratory investigations. Colonoscopic evaluation was performed for the included patients by recording endoscopic abnormalities and obtaining biopsies from lesions.

RESULTS

There was no significant difference between the PHC-positive group when compared with the PHC-negative group regarding patients' age, sex, severity of haematochezia, positive family history and the history of intake of non-steroidal anti-inflammatory drugs (NSAIDs). Significant difference was noted regarding the Child-Pugh class (p<0.05), history of splenectomy (p<0.05), prior history of endoscopic sclerotherapy (EST) or endoscopic variceal ligation (EVL) (p<0.05), prior history of upper gut bleeding (p<0.05), the presence of gastric varices (GVs) (p<0.05), presence of portal hypertensive gastropathy (PHG) (p<0.05), presence of haemorrhoids (p<0.05) and rectal varices (<0.05) and therapy with β-blockers (p<0.05). Regarding the laboratory parameters, the platelet count only was markedly reduced in the PHC-positive group (p<0.05). All the PHC-related sources of bleeding (7/32 cases (21.87%)) were successfully managed with argon plasma coagulation. Regarding the laboratory parameters, the platelet count only was markedly reduced in the PHC-positive group (p<0.05). All the PHC-related sources of bleeding (7/32 cases (21.87%)) were successfully managed with argon plasma coagulation.

CONCLUSION

Our data revealed that it is not only PHC which is involved in haematochezia in cirrhotic patients despite the significant association. Instead, a high prevalence of inflammatory lesions came on the top of the list. Complete colonoscopy is highly advocated to detect probable proximal neoplastic lesions.

Screening for colorectal cancer: possible improvements by risk assessment evaluation?

Emerging results indicate that screening improves survival of patients with colorectal cancer. Therefore, screening programs are already implemented or are being considered for implementation in Asia, Europe and North America. At present, a great variety of screening methods are available including colono- and sigmoidoscopy, CT- and MR-colonography, capsule endoscopy, DNA and occult blood in feces, and so on. The pros and cons of the various tests, including economic issues, are debated. Although a plethora of evaluated and validated tests even with high specificities and reasonable sensitivities are available, an international consensus on screening procedures is still not established. The rather limited compliance in present screening procedures is a significant drawback. Furthermore, some of the procedures are costly and, therefore, selection methods for these procedures are needed. Current research into improvements of screening for colorectal cancer includes blood-based biological markers, such as proteins, DNA and RNA in combination with various demographically and clinically parameters into a "risk assessment evaluation" (RAE) test. It is assumed that such a test may lead to higher acceptance among the screening populations, and thereby improve the compliances. Furthermore, the involvement of the media, including social media, may add even more individuals to the screening programs. Implementation of validated RAE and progressively improved screening methods may reform the cost/benefit of screening procedures for colorectal cancer. Therefore, results of present research, validating RAE tests, are awaited with interest.

Improving colonoscopy referral rates through computer-supported, primary care practice redesign

This quality improvement project was designed to improve rates of referral for colonoscopy screening in the Utah Health Research Network, University of Utah Community Clinics. This study was conducted between October 2004 and June 2007 with the main intervention being a clinic workflow modification using computerized screening reminders embedded in the electronic medical record (EMR). The intervention led to sustained improvement, largely driven by the performance of two network clinics. This study demonstrates that a robust EMR, with decision prompts, accompanied by clinic workflow changes and feedback to providers, can lead to sustained change in the rates of colonoscopy referral.

Lack of follow-up after fecal occult blood testing in older adults: inappropriate screening or failure to follow up?

BACKGROUND

It is unclear whether lack of follow-up after screening fecal occult blood testing (FOBT) in older adults is due to screening patients whose comorbidity or preferences do not permit follow-up vs failure to complete follow-up in healthy patients.

METHODS

A prospective cohort study of 2410 patients 70 years or older screened with FOBT was conducted at 4 Veteran Affairs (VA) medical centers from January 1 to December 31, 2001. The main outcome measure was receipt of follow-up within 1 year of FOBT based on national VA and Medicare data. For patients with positive FOBT results, age and Charlson comorbidity scores were evaluated as potential predictors of receiving a complete colon evaluation (colonoscopy or sigmoidoscopy plus barium enema), and medical records were reviewed to determine reasons for lack of follow-up.

RESULTS

A total of 212 patients (9%) had positive FOBT results; 42% received a complete colon evaluation within 1 year. Age and comorbidity were not associated with receipt of a complete follow-up, which was similar among patients 70 to 74 years old with a Charlson score of 0 compared with patients 80 years or older with a Charlson score of 1 or higher (48% vs 41%; P=.28). The VA site, number of positive FOBT cards, and number of VA outpatient visits were predictors. Of 122 patients who did not receive a complete follow-up within 1 year, 38% had documentation that comorbidity or preferences did not permit follow-up, and over the next 5 years 76% never received a complete follow-up.

CONCLUSIONS

While follow-up after positive FOBT results was low regardless of age or comorbidity, screening patients in whom complete evaluation would not be pursued substantially contributes to lack of follow-up. Efforts to improve follow-up should address the full chain of decision making, including decisions to screen and decisions to follow up.

Continue or discontinue warfarin for fecal occult blood testing in 2010? Does the published evidence provide an answer?

Whether to continue or discontinue warfarin before fecal occult blood testing (FOBT) requires comparison of the risks and benefits of both choices. Clinical practice varies on this issue, and guidelines are silent. A small body of evidence about the effect of warfarin on test characteristics of FOBT is inconclusive, although it suggests no effect. Retrospective studies on this topic may be prone to transfer bias, which affects the composition of the groups assembled for study. Considering the risks and benefits of discontinuing warfarin qualitatively, along with the published literature and clinical context in 2010, where tolerance for false-positive results is higher than it used to be and where immunochemical FOBT is a better screening test than older, guaiac-based FOBT, "no" seems like the "commonsense" answer.

Prevalence of significant neoplasia in FOBT-positive patients on warfarin compared with those not on warfarin

OBJECTIVES

The fecal occult blood test (FOBT) is widely used for colorectal cancer screening. However, the impact of warfarin use on FOBT sensitivity and specificity remains unclear. This study compares the relative risk of neoplasia in FOBT-positive patients stratified by warfarin use.

METHODS

The Clinical Outcomes Research Initiative database was used to identify patients with positive FOBT as the only indication for colonoscopy during 2005-2006. Patients were categorized on the basis of documented warfarin status within a 30-day period before FOBT. We compared the demographics and prevalence of significant colon findings (defined as polyp >9 mm or suspected malignant tumor) among the two groups. After adjusting for confounding variables, logistic regression was used to estimate the odds ratio of significant findings in warfarin-positive vs. warfarin-negative patients.

RESULTS

Of 10,266 patients with positive FOBT, 372 used warfarin, 9,265 did not use warfarin, and 629 were excluded because of missing warfarin status. Warfarin-positive patients were more likely male (65 vs. 50%; P<0.0001), Caucasian (88 vs. 80%; P<0.0001), and veterans (53 vs. 33%; P<0.0001). The prevalence of a significant finding was greater in the warfarin group, 16 vs. 11.4% (P<0.01). After adjusting for age and sex, the relative risk of significant colon findings among warfarin-positive patients was not significantly different from warfarin-negative patients (odds ratio 1.1, 95% confidence interval: 0.81-1.44).

CONCLUSIONS

No increased risk for significant colonic findings among FOBT-positive patients according to warfarin use was identified. These findings suggest that continuing warfarin before FOBT will not affect the positive predictive value of this screening test.

Hematochezia in the young patient: a review of health-seeking behavior, physician attitudes, and controversies in management

Hematochezia, defined as the passage of blood or clots from the rectum, is common and can be quite alarming. Few patients in general consult their physicians for this symptom. Various reasons have been explored for this behavior. Physician attitudes also shed some light onto why some patients are referred and others are not. Hematochezia may be associated with an anal cause in most healthy young adults (<50 years of age), but some may end up being diagnosed with colorectal cancer (CRC). Many studies have looked at the usefulness of clinical presentation in helping to decide which patients need further evaluation and what the optimal mode of investigation should be. Of note, studies on patients less than 50 years of age presenting with rectal bleeding have been few and far between. The results of these studies have been contradictory to the point where, today, there is no single set of consensus guidelines on the approach to hematochezia in young patients. In this review, the value of clinical symptoms and the underlying risk of CRC in guiding this clinical decision will be discussed.

Colorectal cancer screening practices among obstetrician/gynecologists and nurse practitioners

OBJECTIVE

Obstetrician/gynecologists (Ob/Gyn) and nurse practitioners (NP) are essential providers of primary and preventive care for their female patients. Therefore, colorectal cancer (CRC) screening should be part of their routine preventive practices. The purpose of our study is to evaluate the CRC screening practices of these providers.

METHODS

A self-administered survey was mailed to a national sample of 1130 Ob/Gyns and NPs to assess providers' demographics, current CRC screening practices, and familiarity with CRC guidelines.

RESULTS

Three hundred thirty-six providers (29.7%) returned our survey (54% Ob/Gyns and 46% NPs). Three fourths of providers routinely performed screening for CRC, compared with 95% for breast and cervical cancer. Routine CRC screening was more common among Ob/Gyns (87.2%) than NPs (61.7%) (p < 0.001). Slightly over half of providers correctly identified the recommended age to begin CRC screening for the average-risk patient, with no significant difference between provider types. Overall, Ob/Gyns scored higher than NPs on a series of questions assessing CRC screening (p < 0.03). Several provider factors were found to be significantly associated with screening practices, including practicing >10 years (p < 0.01), practicing in a multispecialty group (2.62 times more likely), and having an older patient population (p < 0.001).

CONCLUSIONS

Ob/Gyns and NPs underuse CRC screening compared with breast and cervical cancer screening and lack knowledge about appropriate use of CRC screening modalities. Opportunities to further educate Ob/Gyns and NPs should be sought to improve compliance with current CRC screening guidelines.

Effectiveness of a provider reminder on fecal occult blood test follow-up

PURPOSE

To determine the impact of an electronic reminder upon the timeliness and proportion of patients referred for evaluation of a positive fecal occult blood test and receipt of colonoscopy.

METHODS

Outpatients (468) with a positive occult blood test were prospectively identified and had a note entered into their electronic medical record prompting their provider to act upon this result. The results were compared to 634 control patients from the prior year.

RESULTS

The intervention was associated with a 20.3% absolute increase in gastroenterology consultation within 14 days (P < 0.001) and significantly prompter consultation. The median time to colonoscopy decreased by 38 days during the intervention (P = <0.0001). A multivariable model found that the intervention was significantly associated with shorter time to consultation and colonoscopy.

CONCLUSION

A simple electronic reminder is associated with a significant improvement in the proportion of patients referred for, and timeliness of, evaluation of a positive FOBT.

Factors associated with practice of colorectal cancer screening among primary care physicians in a Chinese population: a cross-sectional study

OBJECTIVES

Primary care physicians (PCPs) are influential in colorectal cancer (CRC) screening uptake in the community. This study aims to evaluate the factors associated with PCPs' practice of CRC screening among asymptomatic patients in a Chinese population.

METHODS

A validated postal questionnaire was sent to all practicing PCPs who were members of a community-based network in Hong Kong. Three separate rounds of reminder letters were sent to non-respondents. Binary logistic regression analysis was used with ever-referral for CRC screening in the past 12 months as the outcome variable. Predictor variables include physicians' gender, clinical experience, types of practice, and attitudes towards CRC screening.

RESULTS

Of 428 eligible physicians, 263 (61.4%) responded. A total of 187 physicians (71.1%) had referred patients for CRC screening in the past 1 year. Among all asymptomatic patients aged 50 years or older, physicians reported referring only 3.0% (1.0-10.0%) [median (interquartile range)] of patients. Colonoscopy (57.0%) and fecal occult blood testing (FOBT) (46.4%) were the most commonly recommended tests for these asymptomatic patients. Family history of CRC (58.6%) and patients' concern about CRC (50.2%) were major reasons for referral. PCPs in private practice (adjusted odds ratio [aOR] 2.60, 95% C.I. 1.21-5.59) and those with positive attitude towards CRC screening (aOR 2.27, 95% C.I. 1.15-4.48) were more likely to recommend CRC screening.

CONCLUSIONS

PCPs' attitude towards CRC screening is a significant determinant of its practice. Future studies should identify and strengthen the influencers of PCPs' attitude to enhance CRC screening rates.

Using a multifaceted approach to improve the follow-up of positive fecal occult blood test results

OBJECTIVES

Inadequate follow-up of abnormal fecal occult blood test (FOBT) results occurs in several types of practice settings. Our institution implemented multifaceted quality improvement (QI) activities in 2004-2005 to improve follow-up of FOBT-positive results. Activities addressed precolonoscopy referral processes and system-level factors such as electronic communication, provider education, and feedback. We evaluated their effects on timeliness and appropriateness of positive-FOBT follow-up and identified factors that affect colonoscopy performance.

METHODS

Retrospective electronic medical record review was used to determine outcomes before and after QI activities in a multispecialty ambulatory clinic of a tertiary care Veterans Affairs facility and its affiliated satellite clinics. From 1869 FOBT-positive cases, 800 were randomly selected from time periods before and after QI activities. Two reviewers used a pretested standardized data collection form to determine whether colonoscopy was appropriate or indicated based on predetermined criteria and if so, the timeliness of colonoscopy referral and performance before and after QI activities.

RESULTS

In cases where a colonoscopy was indicated, the proportion of patients who received a timely colonoscopy referral and performance were significantly higher post-implementation (60.5% vs. 31.7%, P<0.0001 and 11.4% vs. 3.4%, P=0.0005). A significant decrease also resulted in median times to referral and performance (6 vs. 19 days, P<0.0001 and 96.5 vs. 190 days, P<0.0001) and in the proportion of positive-FOBT test results that had received no follow-up by the time of chart review (24.3% vs. 35.9%, P=0.0045). Significant predictors of absence of the performance of an indicated colonoscopy included performance of a non-colonoscopy procedure such as barium enema or flexible sigmoidoscopy (OR=16.9; 95% CI, 1.9-145.1), patient non-adherence (OR=33.9; 95% CI, 17.3-66.6), not providing an appropriate provisional diagnosis on the consultation (OR=17.9; 95% CI, 11.3-28.1), and gastroenterology service not rescheduling colonoscopies after an initial cancellation (OR=11.0; 95% CI, 5.1-23.7).

CONCLUSIONS

Multifaceted QI activities improved rates of timely colonoscopy referral and performance in an electronic medical record system. However, colonoscopy was not indicated in over one third of patients with positive FOBTs, raising concerns about current screening practices and the appropriate denominator used for performance measurement standards related to colon cancer screening.

Reasons patients with a positive fecal occult blood test result do not undergo complete diagnostic evaluation

PURPOSE

Screening for fecal occult blood reduces colorectal cancer mortality by identifying patients with positive results for complete diagnostic evaluation (CDE). CDE rates are suboptimal, however. We sought to determine common reasons for nonperformance of a CDE as recorded by the primary care physician.

METHODS

We undertook a descriptive analysis of reasons reported by physicians for nonperformance of CDE in a nested sample of patients with positive fecal occult blood test (FOBT) results from a randomized controlled trial designed to evaluate the impact of a physician intervention (CDE reminder-feedback and educational outreach) on recommendation and performance rates in primary care practices. Inspection of administrative data for 1,468 patients with positive results showed that 661 (45%) did not undergo CDE. We reviewed patient follow-up forms, which were completed by physicians for patients who did not have a CDE, to identify reasons for nonperformance.

RESULTS

Nonperformance of CDE was due to physician decision for 217 patients (33%). In 123 patients (19%), reasons for nonperformance were compatible with the guidelines, and in 94 patients (14%), they were not. Reasons wholly or partially due to factors other than physician decision were noted in 212 patients (32%); physician action was considered to be appropriate in these patients. For the 232 patients (35%) without a clearly documented reason for CDE nonperformance, the appropriateness of the physicians' action could not be determined.

CONCLUSIONS

Decision making by primary care physicians had a major effect on nonperformance of CDE after a positive FOBT result. Colorectal cancer screening programs should include guidance for physicians about when a CDE should and should not be performed.

Identification of patients at increased risk for colorectal cancer in an open access endoscopy center

GOALS

To determine whether patients referred for open access endoscopy (OAE) are being appropriately identified as "increased risk" or "average risk" for colorectal cancer (CRC) by referring physicians.

BACKGROUND

OAE allows nongastroenterologists to schedule elective endoscopies without prior consultation with a gastroenterologist. It is unknown how accurately referring physicians identify CRC risk of such patients.

METHODS

We retrospectively reviewed the records of outpatients referred to a single OAE center for screening or surveillance colonoscopy from July 1, 2001 to November 8, 2002. Before colonoscopy, a 3-question tool was used to stratify each patient as average risk or increased risk for CRC. CRC risk assessment was compared with the referring physician's indication for colonoscopy. Chi-square testing was used to compare the incidence of neoplastic polyps between average risk and increased risk patients.

RESULTS

Two hundred eighty-eight patients met inclusion criteria. Referring physicians accurately identified 61% of 126 increased risk patients, including 13 of 19 patients (68%) with a personal history of CRC, 29 of 61 patients (48%) with a family history of CRC, 47 of 61 patients (77%) with a personal history of colonic polyps, and 0 of 8 patients (0%) who met clinical criteria for hereditary nonpolyposis colorectal cancer. Adenomatous polyps were found in 24% of average risk patients compared with 41% of increased risk patients (P<0.01).

CONCLUSIONS

In an OAE system, referring physicians often fail to correctly identify patients at increased risk for CRC. Our 3-question tool for risk assessment helps to better identify patients at increased risk of CRC and can be used by gastroenterologists to stratify patients referred for OAE.

Knowledge, Perceptions, and Communication about Colorectal Cancer Screening among Chinese American Primary Care Physicians

Objective

To assess Chinese American primary care physicians' knowledge, attitude, and barriers to recommending colorectal cancer (CRC) screening to their Chinese American patients.

Methods

Chinese American primary care physicians serving Chinese American patients in two metropolitan areas were invited to complete a mailed survey on CRC screening knowledge, attitudes toward shared decision making and CRC screening, and CRC screening recommendation patterns.

Results

About half of the 56 respondents did not know CRC incidence and mortality figures for Chinese Americans. Those aged 50 and younger, graduating from U.S. medical schools, or working in non-private settings had higher knowledge scores (p < 0.01). Physicians graduating from U.S. medical schools had more favorable attitudes toward shared decision making (p < 0.01). Lack of health insurance, inconsistent guidelines, and insufficient time were the most frequently cited barriers to recommending CRC screening.

Conclusions

Most Chinese American physicians had knowledge, attitude, and communication barriers to making optimal CRC screening recommendations.

Digital fecal occult blood testing in the ambulatory urology clinic

BACKGROUND

This study was designed to evaluate the use and yield of fecal occult blood testing (FOBT) in an ambulatory urology clinic.

STUDY DESIGN

Patients seen in the ambulatory urology clinic were prospectively evaluated with FOBT. The test was performed only on patients when a rectal examination was indicated as part of their urologic evaluation. Patients who were found to have a positive FOBT were then referred for additional gastrointestinal evaluation.

RESULTS

One hundred eight patients were evaluated, including 57 men and 51 women. Eight patients (7%), including six men and two women, were found to be positive for fecal occult blood. Two patients were found to have upper gastrointestinal sources of bleeding (one gastritis with Barrett's esophagitis and one with a duodenal ulcer). Two patients had benign lower gastrointestinal sources of bleeding, including one with hyperplastic polyps and one with a tubular adenoma. One patient was diagnosed with a moderately differentiated adenocarcinoma of the sigmoid colon. One had negative followup fecal occult blood test, and two were lost to followup.

CONCLUSIONS

Addition of FOBT to routine digital rectal examination performed in the ambulatory urology clinic is an inexpensive and simple test that can detect otherwise asymptomatic underlying gastrointestinal pathology. Although the six-sample test is a preferred test for colorectal cancer screening, a digital FOBT during routine urologic evaluation can detect a clinically significant upper or lower gastrointestinal lesion, at the same time increase compliance with FOBT. Larger, prospective studies are needed to confirm the benefit of digital FOBT during a routine urologic visit.

Awareness of and adherence to cancer screening guidelines among health professionals in Japan

Since 1998 in Japan, guidelines for cancer screening programs have been developed and revised by a research group funded by the Ministry of Health, Labour and Welfare. However, little is known about health professionals' awareness of and adherence to the cancer screening guidelines. Surveys were conducted by mailing questionnaires to two target groups of health professionals: local government officers of municipal cancer screening programs of 3327 municipalities in 47 prefectures (local government officers group; n = 3327) and councilors of an academic society dealing with a mass survey of gastroenterological cancer (expert group; n = 195). The questionnaire contained questions dealing with: (1) awareness of and adherence to the cancer screening guidelines published in 2001, and (2) basic knowledge of and attitude towards cancer screening. We compared the responses of the two groups. The response rate in both groups was approximately 65%. Over 70% of the respondents were aware of the cancer screening guidelines. However, 20% of the local government officers and 35% of the experts thought that non-recommended methods could be used for population-based screening. Fifty-six percent of the local government officers and 76% of the experts responded that there was no problem with using non-recommended methods for opportunistic screening. Almost all health professionals believed that screening was 'almost always a good idea'. Although the two groups' backgrounds differed, both did not sufficiently understand the evidence-based approach for cancer screening. To properly conduct evidence-based cancer screening, it is necessary that health professionals have an appropriate understanding of the guidelines.

Colorectal cancer screening education, prioritization, and self-perceived preparedness among primary care residents: data from a national survey

BACKGROUND

Colorectal cancer (CRC) screening remains underutilized in the United States. We conducted a national survey of CRC screening education, prioritization, and self-perceived preparedness among resident physicians in Family Practice (FP), Internal Medicine (IM), and Obstetrics and Gynecology (OB/GYN) training programs.

METHODS

Directors/administrators from 1085 FP, IM, and OB/GYN training programs were contacted by e-mail with a request to forward an invitation to participate in our Web-based CRC screening education survey to all residents in their program. Willing residents submitted responses in anonymous fashion. Data were analyzed using chi2 tests and analysis of variance methods.

RESULTS

In total, 243 program directors/administrators forwarded our invitation, and 835 residents responded (384 FP, 266 IM, 177 OB/GYN, 8 undesignated specialty). Nearly all resident responders (89%) had received CRC screening education, but few content delivery methods were reported. Most felt at least somewhat comfortable or somewhat knowledgeable with respect to advising patients about CRC screening (90%), currently endorsed CRC screening guidelines (89%), and criteria used to identify familial CRC syndromes (50%). However, substantially fewer respondents reported feeling very comfortable or very knowledgeable in these areas (45%, 23%, and 5%, respectively). Program specialty, level of training, and gender were the strongest indicators of self-perceived preparedness.

CONCLUSIONS

Although based on a relatively small sample of all FP, IM, and OB/GYN residents, these data suggest tangible opportunities to improve the CRC screening curriculum in primary care residency programs.

Colonoscopic evaluation of hematochezia in low and average risk patients for colorectal cancer: A prospective study

AIM: To relate the endoscopic findings in patients with hematochezia with regard to age in “low and average risk” for colorectal cancer (CRC) and to localize significant lesions in order to identify patients who need sigmoidoscopy or total colonoscopy.

METHODS: This prospective study was performed in an open access GI endoscopy unit. Out of 4322 consecutive patients undergoing colonoscopy, 918 reported hematochezia. The final study group comprized 180 patients aged below 45 and 237 over 45. Main exclusion criteria were a 1^st-degree family history of colorectal carcinoma, patients reporting blood mixed with stools and/or progressive colonic symptoms, or patients who had undergone colon surgery for neoplastic lesions.

RESULTS: Total colonoscopy could be performed in 96% of patients. Abnormal findings were observed in 34.3% of the younger and in 65.7% of the older ones. Findings were the presence of polyps in the distal colon (n = 2) and IBD in the proximal colon (n = 29) in the group of the younger patients, and polyps (n = 15), IBD (n = 13), and carcinoma (n = 6, 4 of the lesions were located proximal to the splenic flexure) in the elderly. Our findings suggest that the diagnostic potential of total colonoscopy in patients younger than 45 referring scant hematochezia, is not mandatory. By exploring only the distal tract of the colon we have misdiagnosed two cases of IBD located in the ascending colon. In this group of patients additional risk factors must be identified before performing a total colonoscopy. Regarding the patients older than 45 yr, the exploration of the distal colon would have led to our overlooking a carcinoma, two neoplastic polyps and one IBD located in the proximal colon.

CONCLUSION: Young patients with scant hematochezia but without risk factors for neoplasia do not need a total colonoscopy, whereas is mandatory performing a total colonoscopy in older patients even in the presence of anal pathology.

Effectiveness of complete diagnostic examination in clinical practice settings

BACKGROUND

Thorough follow-up of a positive fecal occult blood test (FOBT) result, or a complete diagnostic evaluation (CDE), is recommended as routine care on the basis of findings from colorectal cancer (CRC) screening trials. CDE involves either colonoscopy or the combination of flexible sigmoidoscopy and double contrast barium enema X-ray. However, little evidence outside clinical screening trial settings has been reported in the literature to support CDE performance. The focus of this study was to determine the impact of CDE in primary care practice settings.

METHODS

We determined diagnostic outcomes for 461 adult patients with a positive FOBT result in 318 primary care practices in southeastern Pennsylvania and southern New Jersey. Sociodemographic data were collected and CDE status was ascertained for these patients. Polytomous logistic models were used to identify whether having CDE was associated with subsequently being diagnosed with lower gastrointestinal "neoplastic disease" or "other gastrointestinal disease" as compared to "normal findings.

RESULTS

Patients who underwent CDE were significantly more likely to have a reported diagnosis of colorectal neoplasia than normal findings (adjusted odds ratio = 3.65, 95% confidence interval = 1.58-8.39, p = 0.02). CDE performance did not result in the differential diagnosis of other gastrointestinal disease.

CONCLUSIONS

Patients with a positive screening FOBT who underwent CDE were more likely to be diagnosed with colorectal neoplasia than with less serious conditions or have normal findings. Results support the use of CDE in CRC screening.

Factors associated with intentions to adhere to colorectal cancer screening follow-up exams

Background

To increase adherence rate to recommendations for follow-up after abnormal colorectal cancer (CRC) screening results, factors that inhibit and facilitate follow-up must be identified. The purpose of this study was to identify the factors associated with intention to adhere to CRC screening follow-up exams.

Methods

During a 4-week period in October 2003, this survey was conducted with 426 subjects participating in a community-based CRC screening program in Nagano, Japan. Study measures included intention to adhere to recommendation for clinical follow-up in the event of an abnormal fecal occult blood test (FOBT) result, perceived susceptibility and severity of CRC, perceived benefits and barriers related to undergoing follow-up examination, social support, knowledge of CRC risk factors, health status, previous CRC screening, personality and social demographic characteristics. Univariate and multivariate logistic regression analyses on intention to adhere to recommendations for follow-up were performed.

Results

Among the 288 individuals analyzed, approximately 74.7% indicated that they would definitely adhere to recommendations for follow-up. After controlling for age, gender, marital status, education, economic status, trait anxiety, bowel symptoms, family history of CRC, and previous screening FOBT, analyses revealed that lower levels of perceived barriers, higher levers of perceived benefits and knowledge of CRC risk factors were significantly associated with high intention respectively.

Conclusion

The results of this study suggest that future interventions should focus on reducing modifiable barriers by clarifying misperceptions about follow-up, promoting the acceptance of complete diagnostic evaluations, addressing psychological distress, and making follow-up testing more convenient and accessible. Moreover, educating the public regarding the risk factors of CRC and increasing understanding of the benefits of follow-up is also important.

Colorectal cancer screening: physicians' knowledge of risk assessment and guidelines, practice, and description of barriers and facilitators

BACKGROUND

Physician nonadherence to colorectal cancer (CRC) screening recommendations contributes to underuse of screening.

OBJECTIVE

To assess physicians' knowledge of CRC screening guidelines for average-risk individuals, perceived barriers to screening and practice behaviours.

METHODS

Between October 2004 and March 2005, staff physicians working in three university-affiliated hospitals in Montreal, Quebec, were surveyed. Self-administered questionnaires assessed knowledge of risk classification and current guidelines for average-risk individuals, as well as perceptions of barriers to screening and practice behaviours.

RESULTS

All 65 invited physicians participated in the survey, including 46 (70.8%) family medicine physicians and 19 (29.2%) general internists. Most physicians knew that screening should begin at 50 years of age, all knew to screen men and women and 92% said they screened average-risk patients. Fifty-seven (87.7%) physicians correctly identified three common characteristics associated with high risk for developing CRC. Physicians who screened average-risk patients preferred fecal occult blood testing (88.3%) and colonoscopy (88.3%) to flexible sigmoidoscopy (10.0%) and double-contrast barium enema (30.0%). Most physicians knew the correct screening periodicity for fecal occult blood testing (87.6%), but only 40% or fewer could identify correct screening periodicities for the other modalities. Barriers and facilitators focused on health care delivery system improvements, better evidence on which to base recommendations and development of practical screening modalities.

CONCLUSIONS

Physicians lacked knowledge of the recommended screening modalities and periodicities to appropriately screen average-risk individuals. Because CRC screening can reduce mortality, efforts to improve physician delivery should focus on physician knowledge and changes to the health care delivery system.

Prospective evaluation of the use and outcome of admission stool guaiac testing: the Digital Rectal Examination on Admission to the Medical Service (DREAMS) Study

BACKGROUND

Although physicians often perform fecal occult blood testing at the time of hospital admission, the practice of admission stool guaiac (ASG) testing has not been evaluated prospectively. The aim of this study was to determine the frequency and outcomes of digital rectal examination (DRE) and ASG testing in patients admitted to the hospital.

METHODS

We prospectively evaluated 2143 patients admitted to the medical service at our hospital over a 1-year period. A detailed clinical history was obtained, and the proportion of patients who had DRE and ASG testing, the frequency of positive tests, and the results of follow-up testing were determined.

RESULTS

A DRE was performed in 1539 of the 2143 subjects (71.8%), and 1.8% had abnormal findings, 21.8% had a normal examination, and the result of ASG testing was the only documented finding in the remaining 76.4% of patients. ASG testing was performed in 1342 of the 2143 subjects (62.6%), and the ASG test was positive in 237 persons (17.7%). However, only 161 (67.9%) of those with a positive ASG test had further diagnostic testing and a colonic source of occult gastrointestinal blood loss was detected in 68 (42.2%) of these 161 persons.

CONCLUSIONS

Although DRE and ASG testing are commonly performed on admission to the hospital, documentation of the findings and follow-up of positive tests are poor. These findings highlight the need to improve physician training on the appropriate use and documentation of the DRE and fecal occult blood testing.

Measuring the quality of colorectal cancer screening: the importance of follow-up

PURPOSE

As evidence mounts for effectiveness, an increasing proportion of the United States population undergoes colorectal cancer screening. However, relatively little is known about rates of follow-up after abnormal results from initial screening tests. This study examines patterns of colorectal cancer screening and follow-up within the nation's largest integrated health care system: the Veterans Health Administration.

METHODS

We obtained information about patients who received colorectal cancer screening in the Veterans Health Administration from an existing quality improvement program and from the Veterans Health Administration's electronic medical record. Linking these data, we analyzed receipt of screening and follow-up testing after a positive fecal occult blood test.

RESULTS

A total of 39,870 patients met criteria for colorectal cancer screening; of these 61 percent were screened. Screening was more likely in patients aged 70 to 80 years than in those younger or older. Female gender (relative risk, 0.92; 95 percent confidence interval, 0.9-0.95), Black race (relative risk, 0.92; 95 percent confidence interval, 0.89-0.96), lower income, and infrequent primary care visits were associated with lower likelihood of screening. Of those patients with a positive fecal occult blood test (n = 313), 59 percent received a follow-up barium enema or colonoscopy. Patient-level factors did not predict receipt of a follow-up test.

CONCLUSIONS

The Veterans Health Administration rates for colorectal cancer screening are significantly higher than the national average. However, 41 percent of patients with positive fecal occult blood tests failed to receive follow-up testing. Efforts to measure the quality of colorectal cancer screening programs should focus on the entire diagnostic process.

The role of GPs in increasing compliance to colorectal cancer screening: a randomised controlled trial (Italy)

AIMS

To assess the effect of the provider (GPs versus hospital) on the compliance in returning the faecal occult blood test. To analyse the characteristics of the GP associated with high compliance among his beneficiaries.

METHODS

A questionnaire about screening attitudes was mailed to the 1192 GPs working in 13 districts of the Lazio region. We asked the GPs to participate in a randomised trial, we sampled 130 GPs and about 1/10 of the GPs' 50-75 year old beneficiaries (n = 3657) were invited to be screened at the GP office and 1/10 (3675) at the nearest gastroenterology centre.

RESULTS

58.5% of the GPs completed the questionnaire and 22.7% agreed to participate in the trial. The compliance in the GP arm was 50%, in the hospital arm 16% (RR 3.4; 95% CI: 3.13-3.70). There was a high variability in the compliance obtained by the GPs. GPs with more than 25 patients visited/day and those incorrectly recommended screening of colorectal cancer obtained a lower compliance (OR 0.74, 95% CI: 0.57-0.95 and OR 0.76, 95% CI: 0.59-0.97, respectively).

CONCLUSIONS

The involvement of GPs in colorectal cancer screening can be very effective to enhance the compliance, but the effectiveness is dependent on their willingness to be involved.

Survey of primary physicians' knowledge of colorectal cancer screening

OBJECTIVE

Colorectal cancer (CRC) is the most common of the gastrointestinal cancers in Israel. The low rate of patient compliance to a recent CRC screening program of Clalit Health Services, a major health management organization in Israel, prompted the present survey of primary care physicians' knowledge and practices regarding CRC screening.

METHODS

A 23-item questionnaire, formulated according to the policy of the Israel Ministry of Health and the recommendations of the American Gastroenterological Association, was distributed to 150 primary physicians of Clalit Health Services. The relative ratio of correct to incorrect answers was calculated for every question and by professional group.

RESULTS

The response rate was 89%. Total score (out of a maximum 23) was 20.68 for family physicians (experts in family medicine), 17.79 for experts in other fields, and 17.82 for general practitioners (average, 0.90, 0.77, and 0.77, respectively). The score for the family physicians was significantly higher than for the other two groups (P=0.0070). Clustering items by specific issues yielded significantly better scores for the family physicians in four areas: screening (P=0.0164), appropriate test for high-risk population in Israel (P=0.0012), definition of average-risk population (P=0.0012), and CRC symptoms (P=0.0108). A low level of knowledge on the definition of the high-risk population was noted in all three groups.

CONCLUSIONS

Experts in family medicine in Israel have significantly greater knowledge of most issues of CRC than primary care experts in other fields and general practitioners, although all three groups lack knowledge on the definition of the high-risk population. Continuing physician education should focus on these areas.

Survey on colorectal cancer screening knowledge, attitudes, and practices of general practice physicians in Lazio, Italy

BACKGROUND

Several international guidelines have recommended the involvement of general practitioners (GPs) in screening programs, but current evidence suggests this is very difficult. We implemented a survey to understand the attitudes, knowledge, and practices regarding colorectal cancer screening of GPs in the Lazio region.

METHODS

Survey of all GPs working in 13 of the 50 districts in Lazio using a mail-in questionnaire.

RESULTS

Out of 1192 GPs, 699 responded (59%). Ninety-four percent consider CRC a preventable disease. Knowledge about oncological screenings is higher in GPs using the guidelines as source of information. Twenty-five percent properly recommend the available screening tests for colorectal cancer, 22% do not recommend any, 6% under-recommend, and 47% over-recommend. Adequate knowledge of oncological screenings is positively associated with correct recommendation. Thirty-two percent of GPs recommend inappropriate follow-up tests for patients with positive fecal occult blood test.

CONCLUSIONS

The low response rate reveals the lack of GP's interest in screening. Knowledge about screening and use of guidelines as sources of scientific information are important factors to improve attitudes about screening, but there is a large percentage of well-informed GPs who do not recommend colorectal cancer screening at all. Currently, many GPs do not properly follow the patients up after a positive FOBT.

Positive predictive value of fecal occult blood testing in persons taking warfarin

BACKGROUND

In clinical practice, some physicians discontinue warfarin prior to fecal occult blood testing (FOBT). Although anticoagulant use is associated with an increased risk of overt gastrointestinal bleeding, the impact of warfarin on the positive predictive value of FOBT is unknown.

METHODS

During a 5-yr period, we prospectively studied all patients taking warfarin who were referred for the evaluation of a positive FOBT. For each patient taking warfarin, we enrolled one age- and gender-matched control subject with a positive FOBT who was not taking anticoagulants. A detailed clinical history was obtained, and all subjects underwent colonoscopy and esophagogastroduodenoscopy.

RESULTS

Lesions consistent with occult bleeding were identified in 59.0% of the 210 patients in the warfarin group and 53.8% of the 210 control subjects (p= 0.27). Although more lesions were identified by colonoscopy in the warfarin group than in control subjects (36.2%vs 25.7%, p= 0.02), there was no difference in the frequency of lesions identified by esophagogastroduodenoscopy (35.2%vs 39.5%, p= 0.43). Overall, adenomas > or =1 cm in diameter (16.2%) and colorectal carcinoma (9.5%) were the most common lesions identified by colonoscopy, while erosive gastritis (15.5%) and erosive duodenitis (11.0%) were the most frequent lesions found by esophagogastroduodenoscopy. Among individuals with colorectal cancer, 83.3% of patients in the warfarin group had early cancers (Dukes' stage A or B) compared with 50.0% of control subjects (p= 0.046).

CONCLUSIONS

Warfarin use did not decrease the positive predictive value of FOBT. These findings suggest that warfarin should not be discontinued prior to FOBT.

Use of colonoscopy for colorectal cancer screening: evidence from the 2000 National Health Interview Survey

BACKGROUND

The use of colonoscopy as a primary screening tool for colorectal cancer is gaining momentum owing to several studies suggesting superior effectiveness and the recent, favorable decision by Medicare to cover all routine screening colonoscopies. This study documents the use of colonoscopy versus other tests to screen for colorectal cancer.

MATERIALS AND METHODS

Data from the 2000 National Health Interview Survey were analyzed. Fecal occult blood test (FOBT), sigmoidoscopy, and colonoscopy done for any reason and for routine screening only were analyzed for those >/=50 years without previously diagnosed colorectal cancer (n = 12,505).

RESULTS

The proportion of the total eligible population receiving any of the recommended tests for all possible reasons and for screening purposes only is 34.6% and 25.1%, respectively. For routine screening purposes, the test most commonly utilized was FOBT (55.6%) followed by colonoscopy (29.1%) and sigmoidoscopy (15.3%). When usage was assessed for all reasons, FOBT was still most commonly utilized (45.8%) followed by colonoscopy (38.7%) and sigmoidoscopy (15.5%). The elderly, non-White males and those with private insurance have a higher probability of receiving colonoscopy than FOBT. Several regional differences exist, including higher probability of undergoing sigmoidoscopy versus colonoscopy in the West.

CONCLUSIONS

Only one fourth (upper limit one third) of the study population complied with colorectal cancer screening recommendations. Nearly one third of the routine screening tests done in 2000 were colonoscopies. This study provides baseline values that can be used to project future colonoscopy demand and identify potential supply barriers.

Survey of surgeons' and internists' knowledge of colorectal cancer screening

BACKGROUND

Colorectal cancer (CRC) is the most common of the gastrointestinal cancers in Israel, with an incidence of 50 cases per 100,000 for men and 45 per 100,000 for women in 2000.

AIM

The low rate of patient compliance noted in CRC screening program conducted in our center, prompted the present survey of the knowledge and practices regarding CRC screening recommendations.

METHODS

A 23-item questionnaire formulated according to the Israeli Ministry of Health policy and recommendation of the American Gastroenterological Association was distributed among the physicians of the six departments of internal medicine, and the department of surgery of the Rabin Medical Center. The relative ratio of correct answers was calculated for every question and by subgroups: internists and surgeons, experts and residents in internal medicine and in surgery.

RESULTS

Fifty-five of 80 physicians (69%) completed the questionnaire. The total score for all participants was 15.82 (average 0.68), significantly lower than the optimal correct score of 23 (average 1.00). The internists had a similar total score to the surgeons, 15.61 and 15.28. When the questions were clustered according to specific issues and only the correct answers for each cluster scored, the success rate decreased with a range of 19-69%. Only 22% of responders did not advise fecal occult blood test (FOBT) for the high-risk population; 57% thought the screening age range was 40-65 years, and only 37% knew that the high-risk criteria include a family history of ovarian cancer.

CONCLUSION

Both internists and surgeons' knowledge about screening recommendations of CRC can be improved. Health authorities should invest greater efforts in continuing physician education. We believe that this strategy will increase the participation rate in CRC preventive programs.

Randomized controlled trial of the impact of intensive patient education on compliance with fecal occult blood testing

BACKGROUND

Randomized controlled trials have demonstrated that fecal occult blood testing (FOBT) reduces colorectal cancer (CRC) mortality. However, patient compliance with FOBT is low and this is one of the major barriers to CRC screening.

OBJECTIVE

To determine whether intensive patient education increases FOBT card return rates.

DESIGN

Randomized controlled trial.

SETTING

Department of Veterans Affairs primary care clinic.

PARTICIPANTS

Seven hundred eighty-eight patients who were referred for FOBT.

INTERVENTIONS

Patients were randomly allocated to receive either intensive (n=396) or standard (n=392) patient education. Patients in the intensive education group received a one-on-one educational session by primary care nurses on the importance of CRC screening, were instructed on how to properly collect stool specimens for FOBT, and were given a 2-page handout on CRC screening. Patients in the standard education group only received the FOBT cards and written instructions from the manufacturer on how to properly collect stool specimens for FOBT.

RESULTS

Patients in the intensive education group were more likely to return the FOBT cards (65.9% vs 51.3%; P<.001) and called the clinic with additional questions less often (1.5% vs 5.9%; P=.001) than the standard education group. The median time to return the FOBT cards was significantly shorter in the intensive education group (36 vs 143 days; P<.001 by log-rank test). However, the proportion of patients who had a positive FOBT did not differ in the two groups (4.6% vs 6.0%; P=.51).

CONCLUSIONS

Intensive patient education significantly improved patient compliance with FOBT. Future studies to evaluate additional educational strategies to further improve patient compliance with CRC screening are warranted.

Prevalence of colorectal cancer screening in a large medical organization

The primary objective of this study was to determine the prevalence of colorectal cancer (CRC) screening among eligible patients in a large medical practice. A secondary objective was to compare CRC screening rates obtained from medical records with physician self-reported CRC screening recommendation. We conducted a retrospective record review of 214 patients ages > or = 50 years of a large multispecialty medical organization in Houston, Texas, for receipt of fecal occult blood test (FOBT), flexible sigmoidoscopy (SIG), and/or colonoscopy (COL). We estimated prevalence using two definitions: (a) FOBT in past year or SIG in past 5 years or COL in past 10 years; and (b) FOBT in past year and SIG in past 5 years or COL in past 10 years. Age, gender, race/ethnicity, family history, number of chronic conditions, and index visit were independent variables. Contingency table and logistic regression analysis were used to test for associations between outcomes and independent variables. Our study population was 48% male with a mean age of 63 years (range: 53-84 years). One-quarter of the records showed FOBT by 3-day kit (51 of 214) and 27% by digital rectal exam (57 of 214). SIG was recorded in 32% of records. Half (54%) of the records had documentation of CRC screening according to definition no. 1 and 19% according to definition no. 2. Screening rates from medical record review were lower than those derived from physician self-report. Our findings underscore the need for interventions to improve CRC screening in primary care settings.

Patients' views on follow up of colorectal cancer: implications for risk communication and decision making

BACKGROUND

Medical views about the clinical value and potential detrimental effect on quality of life of postoperative follow up are divided. There is no literature on the views of British patients with colorectal cancer towards the follow up process.

AIM

To investigate patients' views and experiences of follow up of colorectal cancer, and to assess their attitudes towards suggested changes to follow up policy.

PATIENTS AND METHODS

A total of 156 asymptomatic and disease-free patients with colorectal cancer were identified from the follow up clinic. Recurrence-free status was confirmed through retrieval of computerised clinic letters. A postal survey using a 39 item piloted questionnaire was undertaken. Data analysis generated descriptive statistics and logistic regression models.

RESULTS

A response rate of 61% (95) was obtained. Among these respondents, 63% (60) had undergone initial surgery within three years of the time of the survey, and 86% (82) patients expected a further follow up appointment. Majorities of the sample, ranging from 71% (67) to 96% (91), expressed satisfaction with respect to clinic delays, staff conduct and knowledge about their case, consultation time, and being able to discuss personal problems freely. However some patients reported difficulty in discussing sexual problems at the clinic. Appointment imminence caused anxiety, sleep problems, and decreased appetite in 35% (35), 27% (26), and 8 % (8) of patients respectively. However, 78% (74) patients felt reassured and optimistic for the future after receiving results. Such optimism is not necessarily justified in terms of estimated mortality risks. A majority (78%, 66) stated that they would value finding out about the presence of recurrence even if there would be no survival benefit. Nearly half of the sample (48%, 43) felt that they would disagree with the cessation of follow up in any circumstances. Only 47% (42) and 27% (24) indicated that they would accept follow up by a specialist nurse or their general practitioner, respectively. Attitude to follow up was unrelated to reported anxiety before appointments. Only 22% (19) of the sample could identify risk indicators for recurrence, but 64% (61) agreed that they would like to be told what to look for.

DISCUSSION

A sample of patients with colorectal cancer expressed a high degree of satisfaction with hospital follow up. Although a substantial minority reported suffering from pre-visit anxiety, most felt that this disadvantage was compensated for by reassuring results, and believed that investigations did not have a significant negative impact on their quality of life. Respondents valued hospital follow up, and half would reject complete discharge or alternative forms of follow up. These findings demonstrate that patients have a different perception of the risk of recurrence than clinicians who would consider the survival prospects for most patients to be more or less unaffected by follow up interventions. Attempted modifications to follow up policies should be introduced with caution, and should take account of patient understanding of medical reasoning. The findings also raise questions about risk communication with patients.

Physician and patient factors associated with ordering a colon evaluation after a positive fecal occult blood test

OBJECTIVE

Successful colorectal cancer screening relies in part on physicians ordering a complete diagnostic evaluation of the colon (CDE) with colonoscopy or barium enema plus sigmoidoscopy after a positive screening fecal occult blood test (FOBT).

DESIGN

We surveyed primary care physicians about colorectal cancer screening practices, beliefs, and intentions. At least 1 physician responded in 318 of 413 (77%) primary care practices that were affiliated with a managed care organization offering a mailed FOBT program for patients aged >/=50 years. Of these 318 practices, 212 (67%) had 602 FOBT+ patients from August through November 1998. We studied 184 (87%) of these 212 practices with 490 FOBT+ patients after excluding those judged ineligible for a CDE or without demographic data. Three months after notification of the FOBT+ result, physicians were asked on audit forms if they had ordered CDEs for study patients. Patient- and physician-predictors of ordering CDEs were identified using logistic regression.

MEASUREMENTS AND MAIN RESULTS

A CDE was ordered for only 69.5% of 490 FOBT+ patients. After adjustment, women were less likely to have had CDE initiated than men (adjusted odds, 0.66; confidence interval, 0.44 to 0.97). Physician survey responses indicating intermediate or high intention to evaluate a FOBT+ patient with a CDE were associated with nearly 2-fold greater adjusted odds of actually initiating a CDE in this circumstance versus physicians with a low intention.

CONCLUSIONS

Primary care physicians often fail to order CDE for FOBT+ patients. A CDE was less likely to be ordered for women and was influenced by physician's beliefs about CDEs.