Association between neoadjuvant chemoradiation and survival for patients with locally advanced rectal cancer

AIM

To examine the overall survival differences for the following neoadjuvant therapy modalities - no therapy, chemotherapy alone, radiation alone and chemoradiation - in a large cohort of patients with locally advanced rectal cancer.

METHOD

Adults with clinical Stage II and III rectal adenocarcinoma were selected from the National Cancer Database and grouped by type of neoadjuvant therapy received: no therapy, chemotherapy only, radiotherapy only or chemoradiation. Multivariable regression methods were used to compare adjusted differences in perioperative outcomes and overall survival.

RESULTS

Among 32 978 patients included, 9714 (29.5%) received no neoadjuvant therapy, 890 (2.7%) chemotherapy only, 1170 (3.5%) radiotherapy only and 21 204 (64.3%) chemoradiation. Compared with no therapy, chemotherapy or radiotherapy alone were not associated with any adjusted differences in surgical margin positivity, permanent colostomy rate or overall survival (all P > 0.05). With adjustment, neoadjuvant chemoradiation vs no therapy was associated with a lower likelihood of surgical margin positivity (OR 0.74, P < 0.001), decreased rate of permanent colostomy (OR 0.77, P < 0.001) and overall survival [hazard ratio (HR) 0.79, P < 0.001]. When compared with chemotherapy or radiotherapy alone, chemoradiation remained associated with improved overall survival (vs chemotherapy alone HR 0.83, P = 0.04; vs radiotherapy alone HR 0.83, P < 0.019).

CONCLUSION

Neoadjuvant chemoradiation, not chemotherapy or radiotherapy alone, is important for sphincter preservation, R0 resection and survival for patients with locally advanced rectal cancer. Despite this finding, one-third of patients in the United States with locally advanced rectal cancer fail to receive stage-appropriate chemoradiation.

School-Based Health Centers and Adolescent Substance Use: Moderating Effects of Race/Ethnicity and Socioeconomic Status

BACKGROUND

School-based health centers (SBHCs) have been associated with many positive health and academic outcomes. The current study extends previous research and examines possible differences in the association between SBHC exposure and adolescent alcohol, tobacco, and other drug use by race/ethnicity, sex, and socioeconomic status (SES).

METHODS

California Healthy Kids Survey data from 504 traditional high schools in California were linked with publicly available data on SBHCs and school demographics. Multilevel logistic regression analyses were conducted controlling for school and individual characteristics.

RESULTS

Significant interactions suggest that SBHC exposure was inversely associated with past 30-day alcohol use, binge drinking, and cigarette and e-cigarette use among African American youth and negatively associated with cigarette and marijuana use among Asian youth, relative to whites. There was also a significant interaction between SBHC exposure and parent education for past 30-day alcohol use and binge drinking. No significant sex interactions were observed.

CONCLUSIONS

SBHC exposure appears to be inversely related to substance use among youth in some ethnic minority groups and youth of lower SES. This may have implications regarding SBHC placement and investment. Additional research is necessary to understand the mechanisms through which SBHCs may influence adolescent substance use and other health behaviors.

Deficits in young men's knowledge about accessing sexual and reproductive health services

OBJECTIVE

The current study aimed to examine (1) gender differences in college students' knowledge of sexual and reproductive health care (K-SRHC) service access points, and (2) the relationship between demographic and psychosocial factors and college students' overall K-SRHC service access points.

METHODS AND PARTICIPANTS

Self-report online surveys were administered to 18- and 19-year-old college students from a northern California public university (N = 183; 39.9% men; 32.2% Latino).

RESULTS

Women reported higher overall K-SRHC service access point scores than men. Findings indicated that gender and family planning self-efficacy were the strongest correlates of K-SRHC service access points. Men with a regular source of health care had higher K-SRHC service access points than men without.

CONCLUSIONS

Results suggest that college men need additional education about how to access sexual and reproductive health services to support their own and their partner's health.

Obstructive Sleep Apnea Increases the Risk of Cardiopulmonary Adverse Events Associated with Ambulatory Colonoscopy Independent of Body Mass Index

BACKGROUND

The relationship between body mass index (BMI) and cardiopulmonary adverse events (CAEs) for ambulatory colonoscopy is unclear.

AIM

To assess the association of BMI and CAEs associated with ambulatory colonoscopy.

METHODS

This is a retrospective cohort analysis of 418 patients who underwent outpatient colonoscopy at the Durham Veterans Affairs Medical Center categorized as normal/overweight (BMI < 30), obese (BMI 30-34), or morbidly obese (BMI ≥ 35). Adjusted logistic regression analyses were performed.

RESULTS

At least one CAE occurred in 46.4% of patients (220 events, 72.7% were hypoxia). The rate of CAEs (BMI < 30: 43.8%, BMI 30-34: 48.0%, BMI ≥ 35: 50.6%, p = 0.53) and rate of hypoxia (BMI < 30: 34.8%, BMI 30-34: 40.9%, BMI ≥ 35: 43.2%, p = 0.32) were numerically higher for obese and morbidly obese patients, but not statistically significant. Obese (OR 1.10, 95% CI 0.70-1.73) and morbidly obese (OR 1.07, 95% CI 0.61-1.85) patients did not have an increased risk of CAEs after adjusting for age, ASA class, obstructive sleep apnea (OSA), and type of sedation. OSA was independently associated with an increased risk of CAEs (OR 1.71, 95% CI 1.09-2.74, p = 0.02) after adjusting for BMI, age, ASA class, and type of sedation.

CONCLUSION

OSA confers a higher risk of CAEs independent of BMI and sedation type. Consideration of undiagnosed OSA is recommended for appropriate pre-procedure risk stratification. While not statistically significant in this study, there may be clinically significant increased risks of CAEs and hypoxia for patient with BMI > 30 that require further evaluation with larger studies.

Evaluation of a responsible beverage service and enforcement program: Effects on bar patron intoxication and potential impaired driving by young adults

OBJECTIVE

Studies of alcohol-related harm (violence, injury, illness) suggest that the most significant risk factors are the amount of alcohol consumed and whether obviously intoxicated patrons continue to be served. This study's objective was to investigate the effects of a responsible beverage service (RBS)/enhanced alcohol enforcement intervention on bars, bar patrons, and impaired driving.

METHOD

Two communities-Monroe County, New York, and Cleveland, Ohio-participated in a demonstration program and evaluation. The intervention applied RBS training, targeted enforcement, and corrective actions by law enforcement to a random sample of 10 identified problem bars in each community compared to 10 matched nonintervention problem bars. Data were collected over 3 waves on bar serving practices, bar patron intoxication, drinking and driving, and other alcohol-related harm from intervention and control bars and treatment and comparison communities.

RESULTS

In Monroe County, New York, of the 14 outcome measures analyzed, 7 measures showed statistically significant differences from pre- to postintervention. Six of those measures indicated changes in the desired or positive direction and 2 measures were in the undesired or negative direction. Of note in the positive direction, the percentage of intervention bar patrons who were intoxicated decreased from 44 to 27% and the average blood alcohol concentration of patrons decreased from 0.097 to 0.059 g/dL pre- to postintervention. In Cleveland, Ohio, 6 of the 14 measures showed statistically significant changes pre- to postintervention with 6 in the positive direction and 4 in the negative direction. Of note, the percentage of pseudo-intoxicated patrons denied service in intervention bars increased from 6 to 29%.

CONCLUSIONS

Of the 14 outcome measures that were analyzed in each community, most indicated positive changes associated with the intervention, but others showed negative associations. About half of the measures showed no significance, the sample sizes were too small, or the data were unavailable. Therefore, at best, the results of these demonstration programs were mixed. There were, however, some positive indications from the intervention. It appears that when bar managers and owners are aware of the program and its enforcement and when servers are properly trained in RBS, fewer patrons may become intoxicated and greater efforts may be made to deny service to obviously intoxicated patrons. Given that about half of arrested impaired drivers had their last drink at a licensed establishment, widespread implementation of this strategy has the potential to help reduce impaired driving.

Oregon School-Based Health Centers and Sexual and Contraceptive Behaviors Among Adolescents

This study investigated the association between school-based health centers (SBHCs) and sexual behavior and contraceptive use among 11th graders. The sample included 134 high schools (27 schools with SBHCs) and 11,840 students who participated in the 2015 Oregon Healthy Teens Survey. Multilevel logistic regressions found positive associations between SBHC presence and healthy sexual behavior ( OR = 1.23, p < .05) and contraceptive use ( OR = 1.31, p < .01). Associations were stronger at schools with at least 50% of students receiving free or reduced price lunch. Among SBHC schools, prescribing and dispensing contraceptives onsite was positively related to contraceptive use among students who had sex within the past 3 months ( OR = 1.77, p < .01). Findings suggest that exposure to SBHCs in general, and availability of specific reproductive health services, may be effective population-based strategies to support healthy sexual behaviors among youth.

Socioeconomic disparities, financial toxicity, and opportunities for enhanced system efficiencies for patients with cancer

Cancer care continues to stress the US healthcare system with increases in life expectancy, cancer prevalence, and survivors' complex needs. These challenges are compounded by socioeconomic, racial, and cultural disparities that are associated with poor clinical outcomes. One innovative and resource-wise strategy to address this demand on the system is expanded use of telehealth. This paradigm has the potential to decrease healthcare and patient out-of-pocket costs and improve patient adherence to recommended treatment and/or surveillance.

School-Based Health Centers' Presence: The Role of School and Community Factors

INTRODUCTION

School-based health centers (SBHCs) offer an efficient mechanism for delivering health services to large numbers of underserved youth; however, their availability varies across communities. Data on sociocontextual variables were analyzed to investigate factors that inhibit and facilitate SBHCs.

METHODS

Secondary data from 2012 to 2015 state databases were linked to examine the association between SBHCs' presence in California high schools and demand, resource, and political conservatism at the school and community levels that may influence where SBHCs are located and the number of provided health services. Data were analyzed in 2015 using hierarchical binary and Poisson models.

RESULTS

Presence of a local non-school-based family planning clinic was the strongest correlate of SBHC presence. School size, percentage non-white, and percentage receiving free or reduced-price lunches were positively associated with SBHC presence. Percentage who voted Republican in the 2012 general election and teen pregnancy rates were negatively associated with SBHC presence. None of the predictors were associated with number of services provided by SBHCs.

CONCLUSIONS

School and community factors appear to play a role in supporting or impeding the establishment of SBHCs. In addition to variables tapping communities' need for and resources available to support SBHCs, political conservatism appears to affect SBHC availability. SBHC advocates can use this information to understand where opportunities for growth might exist, identify collaborative partners, and prepare for challenges to supporting new SBHCs. Researchers may also use this information in evaluation studies to control for school-level confounders and develop appropriate comparison samples through matching procedures.

Ebola virus disease: An update on current prevention and management strategies

Ebola virus disease (EVD) is characterised by systemic viral replication, immuno-suppression, abnormal inflammatory responses, large volume fluid and electrolyte losses, and high mortality in under-resourced settings. There are various therapeutic strategies targeting EVD including vaccines utilizing different antigen delivery methods, antibody-based therapies and antiviral drugs. These therapies remain experimental, but received attention following their use particularly in cases treated outside West Africa during the 2014-15 outbreak, in which 20 (80%) out of 25 patients survived. Emerging data from current trials look promising and are undergoing further study, however optimised supportive care remains the key to reducing mortality from EVD.

Underuse and Overuse of Colonoscopy for Repeat Screening and Surveillance in the Veterans Health Administration

BACKGROUND & AIMS

Regular screening with colonoscopy lowers colorectal cancer incidence and mortality. We aimed to determine patterns of repeat and surveillance colonoscopy and identify factors associated with overuse and underuse of colonoscopy.

METHODS

We analyzed data from participants in a previous Veterans Health Administration (VHA) study who underwent outpatient colonoscopy at 25 VHA facilities between October 2007 and September 2008 (n = 1455). The proportion of patients who received a follow-up colonoscopy was calculated for 3 risk groups, which were defined on the basis of the index colonoscopy: no adenoma, low-risk adenoma, or high-risk adenoma.

RESULTS

Colonoscopy was overused (used more frequently than intervals recommended by guidelines) by 16% of patients with no adenomas, 26% with low-risk adenomas, and 29% with high-risk adenomas. Most patients with high-risk adenomas (54%) underwent colonoscopy after the recommended interval or did not undergo colonoscopy. Patients who received a follow-up recommendation that was discordant with guidelines were more likely to undergo colonoscopy too early (no adenoma odds ratio [OR], 3.80; 95% confidence interval [CI], 2.31-6.25 and low-risk adenoma OR, 5.28; 95% CI, 1.88-14.83). Receipt of colonoscopy at nonacademic facilities was associated with overuse among patients without adenomas (OR, 5.26; 95% CI, 1.96-14.29) or with low-risk adenomas (OR, 3.45; 95% CI, 1.52-7.69). Performance of colonoscopies by general surgeons vs gastroenterologists (OR, 2.08; 95% CI, 1.02-4.23) and female sex of the patient (OR, 3.28; 95% CI, 1.06-10.16) were associated with overuse of colonoscopy for patients with low-risk adenomas. No factors examined were associated with underuse of colonoscopy among patients with high-risk adenomas.

CONCLUSIONS

In an analysis of patients in the VHA system, more than one fourth of patients with low-risk adenomas received follow-up colonoscopies too early, whereas more than one half of those with high-risk adenomas did not undergo surveillance colonoscopy as recommended. Our findings highlight the need for system-level improvements to facilitate the appropriate delivery of colonoscopy that is based on individual risk.

The accuracy and completeness for receipt of colorectal cancer care using Veterans Health Administration administrative data

Background

The National Comprehensive Cancer Network and the American Society of Clinical Oncology have established guidelines for the treatment and surveillance of colorectal cancer (CRC), respectively. Considering these guidelines, an accurate and efficient method is needed to measure receipt of care.

Methods

The accuracy and completeness of Veterans Health Administration (VA) administrative data were assessed by comparing them with data manually abstracted during the Colorectal Cancer Care Collaborative (C4) quality improvement initiative for 618 patients with stage I-III CRC.

Results

The VA administrative data contained gender, marital, and birth information for all patients but race information was missing for 62.1 % of patients. The percent agreement for demographic variables ranged from 98.1–100 %. The kappa statistic for receipt of treatments ranged from 0.21 to 0.60 and there was a 96.9 % agreement for the date of surgical resection. The percentage of post-diagnosis surveillance events in C4 also in VA administrative data were 76.0 % for colonoscopy, 84.6 % for physician visit, and 26.3 % for carcinoembryonic antigen (CEA) test.

Conclusions

VA administrative data are accurate and complete for non-race demographic variables, receipt of CRC treatment, colonoscopy, and physician visits; but alternative data sources may be necessary to capture patient race and receipt of CEA tests.

Measuring Success: Evaluation Designs and Approaches to Assessing the Impact of School-Based Health Centers

Since the founding of the first school-based health centers (SBHCs) >45 years ago, researchers have attempted to measure their impact on child and adolescent physical and mental health and academic outcomes. A review of the literature finds that SBHC evaluation studies have been diverse, encompassing different outcomes and varying target populations, study periods, methodological designs, and scales. A complex picture emerges of the impact of SBHCs on health outcomes, which may be a function of the specific health outcomes examined, the health needs of specific communities and schools, the characteristics of the individuals assessed, and/or the specific constellation of SBHC services. SBHC evaluations face numerous challenges that affect the interpretation of evaluation findings, including maturation, self-selection, low statistical power, and displacement effects. Using novel approaches such as implementing a multipronged approach to maximize participation, entering-class proxy-baseline design, propensity score methods, data set linkage, and multisite collaboration may mitigate documented challenges in SBHC evaluation.

Physician Non-adherence to Colonoscopy Interval Guidelines in the Veterans Affairs Healthcare System

BACKGROUND & AIMS

Colonoscopy can decrease colorectal cancer (CRC) mortality, although performing this procedure more frequently than recommended could increase costs and risks to patients. We aimed to determine rates and correlates of physician non-adherence to guidelines for repeat colonoscopy screening and polyp surveillance intervals.

METHODS

We performed a multi-center, retrospective, observational study using administrative claims, physician databases, and electronic medical records (EMR) from 1455 patients (50-64 y old) who underwent colonoscopy in the Veterans Affairs healthcare system in fiscal year 2008. Patients had no prior diagnosis of CRC or inflammatory bowel disease, and had not undergone colonoscopy examinations in the previous 10 years. We compared EMR-documented, endoscopist-recommended intervals for colonoscopies with intervals recommended by the 2008 Multi-Society Task Force guidelines.

RESULTS

The overall rate of non-adherence to guideline recommendations was 36% and ranged from 3% to 80% among facilities. Non-adherence was 28% for patients who underwent normal colonoscopies, but 45%-52% after colonoscopies that identified hyperplastic or adenomatous polyps. Most of all recommendations that were not followed recommended a shorter surveillance interval. In adjusted analyses, non-adherence was significantly higher for patients whose colonoscopies identified hyperplastic (odds ratio [OR] = 3.1; 95% CI, 1.7-5.5) or high-risk adenomatous polyps (OR = 3.0; 95% CI, 1.2-8.0), compared to patients with normal colonoscopy examinations, but not for patients with low-risk adenomatous polyps (OR = 1.8; 95% CI, 0.9-3.7). Nonadherence was also associated with bowel preparation quality, geographic region, Charlson comorbidity score, and colonoscopy indication.

CONCLUSIONS

In a managed care setting with salaried physicians, endoscopists recommend repeat colonoscopy sooner than guidelines for more than one third of patients. Factors associated with non-adherence to guideline recommendations were colonoscopy findings, quality of bowel preparation, and geographic region. Targeting endoscopist about non-adherence to colonoscopy guidelines could reduce overuse of colonoscopy and associated healthcare costs.

Rates and correlates of potentially inappropriate colorectal cancer screening in the Veterans Health Administration

BACKGROUND

Inappropriate use of colorectal cancer (CRC) screening procedures can inflate healthcare costs and increase medical risk. Little is known about the prevalence or causes of inappropriate CRC screening.

OBJECTIVE

Our aim was to estimate the prevalence of potentially inappropriate CRC screening, and its association with patient and facility characteristics in the Veterans Health Administration (VHA) .

DESIGN AND PARTICIPANTS

We conducted a cross-sectional study of all VHA patients aged 50 years and older who completed a fecal occult blood test (FOBT) or a screening colonoscopy between 1 October 2009 and 31 December 2011 (n = 1,083,965).

MAIN MEASURES

Measures included: proportion of patients whose test was classified as potentially inappropriate; associations between potentially inappropriate screening and patient demographic and health characteristics, facility complexity, CRC screening rates, dependence on FOBT, and CRC clinical reminder attributes.

KEY RESULTS

Of 901,292 FOBT cases, 26.1 % were potentially inappropriate (13.9 % not due, 7.8 % limited life expectancy, 11.0 % receiving FOBT when colonoscopy was indicated). Of 134,335 screening colonoscopies, 14.2 % were potentially inappropriate (10.4 % not due, 4.4 % limited life expectancy). Each additional 10 years of patient age was associated with an increased likelihood of undergoing potentially inappropriate screening (ORs = 1.60 to 1.83 depending on screening mode). Compared to facilities scoring in the bottom third on a measure of reliance on FOBT (versus screening colonoscopy), facilities scoring in the top third were less likely to conduct potentially inappropriate FOBTs (OR = 0.,78) but more likely to conduct potentially inappropriate colonoscopies (OR = 2.20). Potentially inappropriate colonoscopies were less likely to be conducted at facilities where primary care providers were assigned partial responsibility (OR = 0.74) or full responsibility (OR = 0.73) for completing the CRC clinical reminder.

CONCLUSIONS

A substantial number of VHA CRC screening tests are potentially inappropriate. Establishing processes that enforce appropriate screening intervals, triage patients with limited life expectancies, and discourage the use of FOBTs when a colonoscopy is indicated may reduce inappropriate testing.

A comparison of paediatric and adult infectious diseases consultations in Australia and New Zealand

The objective of this paper is to describe paediatric infectious diseases consultations across Australia and New Zealand. We surveyed infectious diseases physicians at 51 hospitals over a period of 2 weeks in 2012. Compared with adult consults, paediatric consults were more frequently received from general paediatricians/physicians and intensive care, yet less frequently from surgeons and emergency. Respiratory, skin/soft tissue and bone/joint infections were the most frequent consultations in children. These data demonstrate the breadth of formal infectious diseases consults in children. Differences between paediatric and infectious diseases consultations need to be considered when planning both paediatric and adult physician training and future curriculum development.

Scoring the Strengths and Weaknesses of Underage Drinking Laws in the United States

Several studies have examined the impact of a number of minimum legal drinking age 21 (MLDA-21) laws on underage alcohol consumption and alcohol-related crashes in the United States. These studies have contributed to our understanding of how alcohol control laws affect drinking and driving among those who are under age 21. However, much of the extant literature examining underage drinking laws use a "Law/No law" coding which may obscure the variability inherent in each law. Previous literature has demonstrated that inclusion of law strengths may affect outcomes and overall data fit when compared to "Law/No law" coding. In an effort to assess the relative strength of states' underage drinking legislation, a coding system was developed in 2006 and applied to 16 MLDA-21 laws. The current article updates the previous endeavor and outlines a detailed strength coding mechanism for the current 20 MLDA-21 laws.