Socioeconomic position and participation in colorectal cancer screening

Bakar A, Hj Jobli NM, Sararaks S. Study protocol for a mixed methods approach to optimize colorectal cancer screening in Malaysia: Integrating stakeholders insights and knowledge-to-action framework

INTRODUCTION

Colorectal cancer is a growing global health concern and the number of reported cases has increased over the years. Early detection through screening is critical to improve outcomes for patients with colorectal cancer. In Malaysia, there is an urgent need to optimize the colorectal cancer screening program as uptake is limited by multiple challenges. This study aims to systematically identify and address gaps in screening service delivery to optimize the Malaysian colorectal cancer screening program.

METHODS

This study uses a mixed methods design. It focuses primarily on qualitative data to understand processes and strategies and to identify specific areas that can be improved through stakeholder engagement in the screening program. Quantitative data play a dual role in supporting the selection of participants for the qualitative study based on program monitoring data and assessing inequalities in screening and program implementation in healthcare facilities in Malaysia. Meanwhile, literature review identifies existing strategies to improve colorectal cancer screening. Additionally, the knowledge-to-action framework is integrated to ensure that the research findings lead to practical improvements to the colorectal cancer screening program.

DISCUSSION

Through this complex mix of qualitative and quantitative methods, this study will explore the complex interplay of population- and systems-level factors that influence screening rates. It involves identifying barriers to effective colorectal cancer screening in Malaysia, comparing current strategies with international best practices, and providing evidence-based recommendations to improve the local screening program.

Colorectal Cancer (CRC) Screening Literacy and Facilitators Related to a Free Screening Program in Thailand

OBJECTIVE

This study aimed to evaluate CRC screening literacy and to determine the association between demographic characteristics and levels of CRC screening literacy and facilitators motivating participation.

METHODS

This cross-sectional study was carried out with 1,272 Thai citizens aged 50-70 years consenting to complete the screening protocol. Data were collected at the final visit by a self-reported questionnaire which was developed and validated using I-CVI=1. Difficulty of CRC screening knowledge dimension was tested by KR20, Cronbach's alpha 0.49.

RESULTS

The majority of participants, 834 (65.6%) had sufficient CRC screening literacy and association between characteristics and levels of CRC screening literacy was not different. Comparing between characteristics and facilitators showed significant differences in trusting healthcare providers, perceiving harmless procedures, having constipation and time available. By married and own income participants exhibited lower trust in healthcare providers, 68% (OR 0.32, 95%CI 0.14 - 0.73) and 59% (OR 0.41, 95%CI 0.19 - 0.95), respectively. Married individuals perceived the procedures of screening involved higher harm, 32% (OR 0.68, 95%CI 0.45 - 0.99). Female and age over 60 with constipation constituted higher screening, 1.9 fold (OR 1.93, 95%CI 1.44 - 2.60) and 1.4 fold (OR 1.44, 95%CI 1.09 - 1.90). Though time available, age over 60 was lower screening 56% (OR 0.44, 95%CI 0.24 - 0.80), while own income and income more than 30,000 THB/month participants constituted higher screening 15 fold (OR 15.14, 95%CI 4.72 - 48.56) and 2.5 fold (OR 2.50, 95%CI 1.50 - 4.18), respectively.

CONCLUSION

CRC screening literacy of participants was high. The association between characteristics and CRC screening literacy levels did not differ while characteristics and facilitators differed in some aspects. The free program promoted CRC screening equity; however, multilevel facilitators must be concerned, prioritized and intervened to motivate participation.

Knowledge, Compliance, and Inequities in Colon Cancer Screening in Spain: An Exploratory Study

In Spain, inequities exist in implementing colorectal cancer (CRC) tests with the target population-adults aged 50 to 69-as part of population-based CRC screening programs. This research aims to further our understanding of the target population's awareness, attitudes, and perceptions of these test-based screening programs. A survey was carried out using an online panel representative of the target population, with a sample collected from 5313 individuals. Data collection took place in June 2022. Descriptive and bivariate analyses were carried out using contingency tables, the Chi-square test, and Cramer's V statistics. The sample was also segmented based on key variables. Finally, the results were analyzed using logistic regression. In the sample population, 62.5% had taken the fecal occult blood test (FOBT), 72.5% reported receiving the invitation letter to participate in the screening program, and 86.8% had prior knowledge of the FOBT. Noncompliance was mainly due to lack of symptoms (40%), non-receipt of invitation letters (39.7%), and forgetfulness or neglect (28.5%). On the contrary, receipt of the letter of invitation (OR 7.35, p < 0.01) and prior knowledge of FOBT (OR 6.32, p < 0.01) were the main variables that increased the probability of test uptake. Other significant variables included frequency of primary care visits (OR 1.71, p < 0.01) and being older (65-69 years old) (OR 1.52, p < 0.01) There is still a pressing need for greater awareness of both CRC risk factors and the benefits of early detection, as well as for overcoming the common misconception that detection should only be sought when symptoms are present.

[Actitudes e imágenes sociales sobre el cribado de cáncer colorrectal. Una aproximación exploratoria mediante grupos de discusión.]

OBJECTIVE

The screening for colorectal cancer (CRC) through the fecal occult blood test (FOBT) has achieved high implementation in Spain, although participation rates are still not optimal. At the same time, available data show significant differences in participation both among autonomous communities and among different sociodemographic groups, which raises various equity issues. This study aimed to conduct an exploratory analysis from a qualitative perspective on the attitudes, perceptions, and social images that the target population for colorectal cancer screenings holded regarding them, as well as the barriers and areas for improvement identified through these.

METHODS

This study was designed using a qualitative research approach, through the conduct of four focus groups in May 2022, with a total of twenty-six participants (equal number of men and women) aged fifty to sixty-nine years. The participants were residents of the Community of Madrid, Catalonia, Andalusia, and the Basque Country (in both large and small cities), with varying educational levels and different previous experiences of participation in the CRC screening program.

RESULTS

Different conceptualizations of prevention were identified, but none that encompassed cancer (especially colorectal cancer) as an element to be incorporated into daily practices since its occurrence is primarily associated with chance. In addition to the lack of knowledge about CRC compared to other types of cancer (such as breast or prostate cancer), various attitudinal barriers to participation in the CRC screening program were perceived. These included the rejection of being part of the older age group (targeted by the test), fear of waiting for the results, lack of reliability, or the sense of being able to postpone the moment.

CONCLUSIONS

This study highlights the need for interventions aimed at promoting the attitude with which the invitation to participate is received and interpreted. It also emphasizes the importance of incorporating colon cancer into the dominant framework of concerns, raising awareness about the significance of early detection, and addressing potential sources of inequity. These interventions should address the broader conceptualization of the role of prevention observed among individuals with higher cultural capital and the greater normalization of screening programs found among women due to their previous experience with breast cancer screening.

Health check-ups for the French under-consuming agricultural population: A pilot evaluation of the Instants santé MSA program

BACKGROUND

The social protection scheme in charge of farmers and agricultural employees (MSA) in France has developed a two-step health promotion program with a nurse appointment followed by a consultation with a doctor of the participant's choosing to reach its under-consuming beneficiaries and enroll them back into a care pathway. Our objective was to carry out a pilot evaluation of this program.

METHODS

The evaluation was carried out on the population invited during the second semester of 2017 using data from the program's service providers (date of invitation, of nurse appointment…), regional MSA bodies (consultation voucher), and reimbursement data (other care consumption). Participation rates were calculated overall and by participant characteristics. Medical needs were identified during the nurse appointment and new care pathways were assessed using reimbursement data. Multivariable regression models identified factors associated with participation.

RESULTS

2366 beneficiaries were included in the analysis. 1559 (65.89%) were men and mean age was 52.41 (standard deviation = 14.86). 409 (17.29%) attended the nurse appointment. There was a significant increase in participation with age, in farmers vs. employees (odds ratio = 1.905, 95% confidence interval = 1.393-2.604), and in people living in the most disadvantaged areas (odds ratio = 1.579, 95% confidence interval=1.079-2.312). Participation to the consultation following the nurse appointment was high (62.35%-73.11%). 87.53% of participants had at least one medical need, and new care pathways were more frequent among those who had attended the nurse appointment (55.50% vs. 34.80%, p < 0.0001).

CONCLUSIONS

This pilot evaluation shows promising results which need to be confirmed with a national evaluation of the program and longer-term evidence.

Heterogeneity in the Utilization of Fecal Occult Blood Testing and Colonoscopy among Migrants and Non-Migrants in Austria: Results of the Austrian Health Interview Survey

Many European studies report lower participation in colorectal cancer screening among migrants than non-migrants. A major limitation of these studies is that usually, the heterogeneity of migrants cannot be accounted for. The aim of this investigation was to examine differences in the utilization of fecal occult blood testing and colonoscopy between non-migrants and the five largest migrant groups residing in Austria using data from the Austrian Health Interview Survey 2019. The two outcomes were compared between non-migrants and migrants using multivariable logistic regression adjusted for socioeconomic and health variables. Migrants from a Yugoslav successor state (OR = 0.61; 95%-CI: 0.44–0.83), Turkish (OR = 0.35; 95%-CI: 0.22–0.55), Hungarian (OR = 0.37; 95%-CI: 0.16–0.82) and German migrants (OR = 0.70; 95%-CI: 0.51–0.98) were less likely to have used a fecal occult blood test compared to non-migrants. Participation in colonoscopy was lower among Turkish migrants (OR = 0.42; 95%-CI: 0.27–0.67) and migrants from a Yugoslav successor state (OR = 0.56; 95%-CI: 0.42–0.75) than among non-migrants. The findings are consistent with studies from other countries and highlight barriers migrants face in accessing the health care system. To address these barriers, the heterogeneity of the population must be taken into account when developing educational materials in order to promote informed decisions about whether or not to participate in colorectal cancer screening.

Construction of an individual socioeconomic status index for analysing inequalities in colorectal cancer screening

OBJECTIVE

To construct an individual socioeconomic status index (ISESI) with information available in the Population Information System of the Region of Valencia, Spain, and use it to analyse inequalities in a colorectal cancer screening programme (CRCSP).

METHODS

Cross-sectional study of men and women aged between 50 and 75 at the time of the study (2020) that were selected from the target population of the Region of Valencia CRCSP. (study sample 1,150,684). First, a multiple correspondence analysis was performed to aggregate information from the Population Information System of the Region of Valencia into an ISESI. Second, data from the 2016 Region of Valencia Health Survey were used for validation, and finally the relationship between CRCSP participation and the ISESI was analysed by logistic regression models.

RESULTS

The variables included in the index were nationality, employment status, disability, healthcare coverage, risk of vulnerability and family size. The most important categories for determining the highest socioeconomic status were being employed and not being at risk of social vulnerability, and being unemployed and at risk of social vulnerability for determining the lowest socioeconomic status. Index validation demonstrated internal and external coherence for measuring socioeconomic status. The relationship between CRCSP participation and the ISESI categorised by quartile (Q) showed that Q4 (the lowest socioeconomic status) was less likely to participate OR = 0.769 (0.757-0.782) than Q1 (the highest socioeconomic status), and the opposite was found for Q2 OR = 1.368 (1.347-1.390) and Q3 OR = 1.156 (1.137-1.175).

CONCLUSIONS

An ISESI was constructed and validated using Population Information System data and made it possible to evaluate inequalities in colorectal cancer screening.

Predictors of Nonadherence to Colorectal Cancer Screening among Hospitalized Women

OBJECTIVES

Despite proven mortality benefit, disparities in colorectal cancer (CRC) screening utilization persist, especially among younger women, minorities, and low-income women, even those who are insured. The purpose of the present study is to evaluate and estimate the effects of sociodemographic and clinical variables associated with nonadherence to CRC screening among hospitalized women.

METHODS

A cross-sectional bedside survey was conducted to collect sociodemographic and clinical comorbidity data believed to affect CRC screening adherence of hospitalized women aged 50 to 75 years who were cancer free (except skin cancer) at enrollment. Logistic regression models were used to assess the association between these factors and nonadherence CRC screening.

RESULTS

In total, 510 women were enrolled for participation in the study. After adjustment for sociodemographic and clinical predictors, only two variables were found to be independently associated with nonadherence to CRC screening: age younger than 60 years (odds ratio [OR] 2.62, 95% confidence interval [CI] 1.58-4.33) and nonadherence to breast cancer screening (OR 3.72, 95% CI 2.29-6.04). By contrast, hospitalized women at high risk for CRC were more likely to be compliant with CRC screening (OR 0.14, 95% CI 0.04-0.50).

CONCLUSIONS

Both younger age and behavior toward screening remain barriers to CRC screening. Hospitalization creates an environment where patients are in close proximity to healthcare resources, and strategies could be used to capitalize on this opportunity to counsel, educate, and motivate patients toward this screening that is necessary for health maintenance. Seizing on this opportunity may help improve CRC screening adherence.

Impact of COVID-19 on cancer screening in South Korea

The coronavirus disease (COVID-19) pandemic significantly declined cancer screening rates worldwide. Its impact on the South Korean population is unclear, depending on socioeconomic status (SES), residence, and history of chronic disease. This study utilized data (2018–2020) from the Korean National Cancer Screening Survey, an annual cross-sectional study employing nationally representative random sampling. Cancer screening rates were defined as the proportion of the eligible population who received respective cancer screening within the last 1 year and investigated four major cancers (stomach, colorectal, breast, and cervical). Screening rates every year were compared with screening rate ratios (SRRs) and the corresponding 95% confidence intervals (CIs). Between 2019 and 2020, screening rates declined significantly by 23%, 17%, 12%, and 8% for colorectal cancer (SRR 0.77; 95% CI 0.73–0.82), stomach cancer (SRR 0.83; 95% CI 0.79–0.87), breast cancer (SRR 0.88; 95% CI 0.82–0.93), and cervical cancer (SRR 0.92; 95% CI 0.87–0.97), respectively. Regardless of cancer type, screening was significantly lower in metropolitan residents, those with higher SES, and, interestingly, those without a history of chronic diseases. The significant decline in cancer screening during the pandemic requires urgent political intervention to reduce the burden of future cancer incidence and mortality.

Palliative Care Utilisation Among Non-Western Migrants in Denmark: A Qualitative Study Of the Experiences of Patients, Family Caregivers and Healthcare Professionals

This study explores care experiences while utilising palliative care services of non-western migrant families from the perspectives of patients, family caregivers, and healthcare professionals in Denmark. Twenty-three semi-structured individual and group interviews were conducted among eight patients with a life-threatening disease, 11 family caregivers, and ten healthcare professionals. Thematic analysis revealed three themes: 1) Communication between families and healthcare professionals; 2) Building and lack of trusting relations, and feeling safe, and 3) Access to information and navigating in the healthcare system. Moreover, ''language and culture'' emerged as transaction themes that are not mutually exclusive, however, interconnect across the mentioned three themes. Non-western migrant families can be supported by healthcare professionals' cultural competency training, negotiating on providing services concerning information, patient preferences, family involvement, and palliative care setting. This study findings urge inter-sectoral collaboration to ensure needs-oriented and linguistically and culturally appropriate palliative care services for non-western migrant families in Denmark.

Participation in Colorectal Cancer Screening among Migrants and Non-Migrants in Germany: Results of a Population Survey

Colorectal cancer screening can contribute to reducing colorectal cancer incidence and mortality. Findings on disparities in the utilization of colorectal cancer screening between migrants and non-migrants have been inconsistent, with some studies reporting lower, and some higher utilization among migrants. The aim of the present study was to examine potential disparities in fecal occult blood testing and colonoscopy among migrants in Germany. Data from a population survey on 11,757 men and women aged ≥50 years is used. Using multivariable logistic regression, the utilization of fecal occult blood testing and colonoscopy was compared between non-migrants, migrants from EU countries and migrants from non-EU countries, adjusting for socio-economic factors and also taking into account intersectional differences by sex and age. The study shows that migrants from the EU (adjusted OR = 0.73; 95%-CI: 0.57, 0.94) and from non-EU countries (adjusted OR = 0.39; 95%-CI: 0.31, 0.50) were less likely to utilize fecal occult blood testing than non-migrants. No disparities for the use of colonoscopy were observed. The findings are in line with studies from other countries and can be indicative of different barriers migrants encounter in the health system. Adequate strategies taking into account the diversity of migrants are needed to support informed decision-making among this population group.

Effects of workplace skin cancer screenings on preventive and risk behaviour

Aim

Skin cancer is the most prevalent cancer in western countries and is associated with a high burden of disease. Skin cancer screenings can help detect cancer at an early stage and thus allow for better treatment. We aimed to analyse the impact of workplace skin cancer screenings on prevention behaviour and potential spillover effects on non-participants.

Subject and methods

Participants of workplace skin cancer screenings completed questionnaires at 0, 3 and 12 months on knowledge about and attitudes toward skin cancer and prevention behaviours. Effects over time were compared using McNemar tests. For additional analyses we performed logistic regression analyses.

Results

Of the 998 participants (44.7% women, mean age 43.3 years), 26.7% had never attended a skin cancer screening. The proportion of participants seeking shade for UV protection and the number of visits to dermatologists and general practitioners increased significantly in the year following workplace screening (p < 0.05). Two thirds (66.4%) recommended skin cancer screenings to others and at least 39.2% of them were sure that this recommendation was followed. Characteristics associated with participants’ recommendation for screening included female gender (odds ratio: 1.62), older age (odds ratio: 1.02), and lower education (odds ratio: 1.40).

Conclusion

Workplace screenings can complement routine skin cancer screenings. They inform participants about the existence and benefits of screenings and may have spillover effects for peers. They can also serve as another source of information on prevention and risk behaviours.

Odds of Incomplete Colonoscopy in Colorectal Cancer Screening Based on Socioeconomic Status

The aim of this study is to investigate the association between socioeconomic status (SES) and the risk of having an incomplete colonoscopy (IC) in the Danish Colorectal Cancer (CRC) Screening Program. In this register-based study we included 71,973 participants who underwent colonoscopy after a positive fecal immunochemical test in the Danish CRC Screening Program. The main exposure, SES, was defined by income and education, and the outcome by complete or incomplete colonoscopy. Among the participants, 5428 (7.5%) had an incomplete colonoscopy. The odds ratio (OR) for ICs due to inadequate bowel preparation was 1.67 (95% CI: 1.46; 1.91) for income in the 1 quartile compared to income in the 4th quartile. ORs for income in the 2nd quartile was 1.38 (95% CI: 1.21; 1.56) and 1.17 (95% CI: 1.03; 1.33) for income in the 3rd quartile. For the educational level, an association was seen for high school/vocational education with an OR of 0.87 (95% CI: 0.79; 0.97) compared to higher education. For ICs due to other reasons, the level of income was associated with the risk of having an IC with an OR of 1.19 (95% CI: 1.05; 1.35) in the 1st quartile and an OR of 1.19 (95% CI: 1.06; 1.34) in the 2nd quartile. For the educational level, there were no significant associations. Low income is associated with high risk of having an IC, whereas educational level does not show the same unambiguous association.

"I'm not doing that." An in-depth examination of nonparticipation in mail-out bowel cancer screening programs

Despite a clear association between the early detection of bowel cancer and increased survival, participation in mail-out screening programs is poor. Several key barriers to participation have been identified, yet research has failed to examine the specific cognitions, actions, and individual contexts from which barriers emerge. The purpose of the current study was to gain a detailed understanding of the actual experience of kit receipt from the perspective of nonparticipants including their opinion on interventions that may be effective in promoting participation. Demographic differences in reasons for nonparticipation are also examined. Opt-out data from a national program was analyzed to detect demographic differences in reasons for nonparticipation. Qualitative interviews were conducted in a sample of "at risk" nonparticipants. Thematic analysis was conducted using an inductive phenomenological approach. Older, higher SES, male and previously screened participants were more likely to provide a medical reason for opting out of participation. Four key themes emerged from interview data. The first reflected intention; whereby participants were either intenders (i.e., they planned to participate) or refusers. Subsequent themes reflected practicalities, emotional reactions, and necessity. Differences between intenders and refusers within these themes as well as opinions regarding interventions were identified. Interventions involving interactions with health professionals, autonomous decision making, and those which emphasize the positive outcomes of screening may encourage refusers to participate in mail-out bowel cancer screening programs. Messages that reinforce the importance of screening or provide a practical reminder may be more useful for intenders.

Population-Based Data Reveal Factors Associated with Organised and Non-Organised Colorectal Cancer Screening: An Important Step towards Improving Coverage

We investigated factors associated with organised and non-organised colorectal cancer screening using faecal occult blood tests, based on data from 308 municipalities in Flanders (6.6 million residents, 57% of Belgium) during 2015-2017. Logistic regression with generalized estimating equations was used to assess the associations between municipal characteristics and organised and non-organised screening coverages. Factors associated negatively with both organised and non-organised screening: percentage of people aged 70-74 in the target population [OR (odds ratios) = 0.98, 95%CI (confidence interval): 0.97-0.99 and OR = 0.98, 95%CI: 0.96-0.999, respectively]; negatively with organised screening: average income [OR = 0.97, 95%CI: 0.96-0.98], percentage of people with a non-Belgian/Dutch nationality [OR = 0.962, 95%CI: 0.957-0.967]; positively with organised screening: percentages of men in the target population [OR = 1.13, 95%CI: 1.11-1.14], jobseekers [OR = 1.12, 95%CI: 1.09-1.15] and people with at least one general practitioner (GP) visit in the last year [OR = 1.04, 95%CI: 1.03-1.05]; positively with non-organised screening: number of patients per GP [OR = 1.021, 95%CI: 1.016-1.026], percentage of people with a global medical dossier handled by a preferred GP [OR = 1.025, 95%CI: 1.018-1.031]. This study helps to identify the hard-to-reach subpopulations in CRC screening, and highlights the important role of GPs in the process of promoting screening among non-participants and encouraging non-organised participants to switch to organised screening.

Colorectal cancer and potential predictors of never screened for faecal occult blood test: a narrative review

Colorectal cancer (CRC) is a major public health threat. Therefore, CRC screening uptake has been a focus with the established precancerous lesion and the strong association of early detection with staging and survival of the disease. However, CRC screening is relatively low in many countries. This article briefly discussed the current situation of CRC, recommendations, and current uptake of CRC screening in various countries. Besides that, this article also highlights the potential factors that help to predict the CRC screening uptake worldwide. Identification of those factors could guide policymakers to develop an effective strategy to improve the CRC screening uptake and ultimately improve the health outcome of the population.

Sociodemographic features and patterns of non-participation in colorectal cancer screening in Finland

BACKGROUND

Colorectal cancer (CRC) screening was run as a randomized health services programme in Finland between 2004 and 2016. This study evaluates sociodemographic features and patterns of non-participation among men and women invited to be screened.

METHODS

The study population in this register-based study includes 233 211 men and women invited to guaiac faecal occult blood test screening on consecutive screening rounds (n = 708 621 invitations). A generalized estimating equation (GEE) was used to estimate incidence rate ratios (IRR) between sociodemographic features and non-participation.

RESULTS

The overall proportion of non-participation was 31.6% and was higher in men (38.8%) than in women (24.6%). Birth cohort, education, marital status and country of birth were associated with non-participation. The birth cohort of 1950-54 was less likely to participate than the birth cohort of 1940-44. Men and women with primary education were more likely non-participants (IRR 1.26, CI 1.23-1.29 and IRR 1.22, CI 1.18-1.26, respectively) than men or women with tertiary education. Further, unmarried persons and immigrants had an increased risk of non-participation. Initial non-participation predicted subsequent behaviour, since, e.g. ∼80% of first-round non-participants also remained non-participants in the second round.

CONCLUSION

Education, gender and marital status had a significant effect on non-participation in the CRC screening programme. As high and comprehensive participation is essential for a successful screening programme, attention should be paid in ensuring participation of all sociodemographic groups. Special efforts should be invested in those not participating in the first invitational round, since initial non-participation predicts non-participation to subsequent invitations.

Inequalities and risk factors related to non-participation in colorectal cancer screening programmes: a systematic review

Background

Colorectal cancer (CRC) screening programmes require high levels of participation in order to reduce mortality. To improve participation rates, it is necessary to identify the health risk factors and social inequalities associated with non-participation.

Methods

A systematic review was conducted between June and September of 2019 in six databases: CINHAL, Medline, Scopus, Social Sciences Citation Index, Embase and PsycINFO. Studies assessing the relationship between health risk factors, participation in preventive activities and participation in CRC screening were included. Methodological assessment was carried out according to the Quality Assessment Tools of the National Heart, Lung and Blood Institute.

Results

A total of nine studies that analyze participation in both organized and opportunistic screening programmes using any type of screening method were finally selected. Data were mainly self-reported although in two studies medical records were also studied. We identified several variables: gender, body mass index, consultation with a doctor or a specialist, educational level, employment, health insurance, residence, ethnicity, age, marital status, income, other preventive activities, obesity, physical activity, smoking, family history of CRC and general health status.

Conclusion

The scarcity of studies linking risk factors, social inequalities and participation in preventive activities for participation in screening in the same study makes it difficult to reach definitive patterns related to non-participation in CRC screening programmes. Nevertheless, being under 60, obese, smoker and sedentary have shown an association with non-participation as well as not visiting a doctor.

Determinants of colorectal cancer screening in Germany: a claims data analysis

With an incidence of 58,000 cases per year, colorectal cancer (CRC) is the third most common type of cancer in Germany. Although guaiac-based fecal occult blood tests (gFOBT) and colonoscopy are accepted strategies for CRC screening offered for individuals aged 50 or 55 onwards, utilization rates remain low.This study examines various determinants for participation in CRC screening using claims data provided by the AOK Niedersachsen and covering the years 2014 to 2016. Using multivariate logistic regression models, we analyzed sociodemographic factors (sex, age, nationality, type of employment) associated with screening behavior, including individuals who underwent colonoscopy or gFOBT. The effect of school education and professional qualification was estimated using subgroups of employees with social insurance.The analysis consisted of 620,977 insured individuals in the study population for screening colonoscopy, while the gFOBT study population contained 845,191 individuals. With increasing age, individuals were less likely to participate in CRC screening. Participation rates for screening were higher for women than men in younger age groups. However, men in higher age groups showed increased participation rates in gFOBT screening. When compared with German citizens, Turkish citizens use the colonoscopy less often and the gFOBT more often. In contrast to employees with social insurance, unemployed individuals accept the prevention services less frequently, whereas pensioners and voluntarily insured individuals exhibit increased participation rates. In terms of education and professional qualification, we estimated a significantly lower participation rate exclusively for the least educated individuals. The results help to better understand patterns of utilization and can contribute to the development of information programs for specific groups.

The impact of income and education on lung cancer screening utilization, eligibility, and outcomes: a narrative review of socioeconomic disparities in lung cancer screening

Non-small cell lung cancer (NSCLC) is the leading cause of cancer deaths in the US and worldwide. In particular, vulnerable populations such as those of low socioeconomic status (SES) are at the highest risk for and suffer the highest mortality from NSCLC. Although lung cancer screening (LCS) has been demonstrated to be a powerful tool to lower NSCLC mortality, it is underutilized by eligible smokers, and disparities in screening are likely to contribute to inequities in NSCLC outcomes. It is imperative that we collect and analyze LCS data focused on individuals of low socioeconomic position to identify and address barriers to LCS utilization and help close the gaps in NSCLC mortality along socioeconomic lines. Toward this end, this review aims to examine published studies that have evaluated the impact of income and education on LCS utilization, eligibility, and outcomes. We searched the PubMed, Ovid MEDLINE, and CINAHL Plus databases for all studies published from January 1, 2010, to October 21, 2020, that discussed socioeconomic-based LCS outcomes. The review reveals that income and education have impact on LCS utilization, eligibility, false positive rates and smoking cessation attempts; however, there is a lack of studies evaluating the impact of SES on LCS follow-up, stage at diagnosis, and treatment. We recommend the intentional inclusion of lower SES participants in LCS studies in order to clarify appropriate eligibility criteria, risk-based metrics and outcomes in this high-risk group. We also anticipate that low SES smokers and their providers will require increased support and education regarding smoking cessation and shared decision-making efforts.

Personalising lung cancer screening: An overview of risk-stratification opportunities and challenges

Randomised clinical trials have shown the efficacy of computed tomography lung cancer screening, initiating discussions on whether and how to implement population‐based screening programs. Due to smoking behaviour being the primary risk‐factor for lung cancer and part of the criteria for determining screening eligibility, lung cancer screening is inherently risk‐based. In fact, the selection of high‐risk individuals has been shown to be essential in implementing lung cancer screening in a cost‐effective manner. Furthermore, studies have shown that further risk‐stratification may improve screening efficiency, allow personalisation of the screening interval and reduce health disparities. However, implementing risk‐based lung cancer screening programs also requires overcoming a number of challenges. There are indications that risk‐based approaches can negatively influence the trade‐off between individual benefits and harms if not applied thoughtfully. Large‐scale implementation of targeted, risk‐based screening programs has been limited thus far. Consequently, questions remain on how to efficiently identify and invite high‐risk individuals from the general population. Finally, while risk‐based approaches may increase screening program efficiency, efficiency should be balanced with the overall impact of the screening program. In this review, we will address the opportunities and challenges in applying risk‐stratification in different aspects of lung cancer screening programs, as well as the balance between screening program efficiency and impact.

Differences in colorectal cancer (CRC) patients who did and did not undergo screening: Results from the 45 and Up Study cohort

BACKGROUND

The Australian National Bowel Cancer Screening Program is a free population-based screening program aiming to identify precancerous lesions and early colorectal cancer using faecal occult blood tests in average-risk Australians. The participation rate in people invited to screening was 42 % in 2017-2018, well below the 56.6 % target level. Increasing screening in high-risk groups; such as those with a subsequent diagnosis of colorectal cancer, will improve the efficiency of the program.

METHODS

Patients were participants in the Australian 45 and Up (cohort) study; aged 55 or 65 years between May 2006 and June 2008. Patients reported a history of colorectal cancer in their enrolment questionnaire and whether or not they had screened before diagnosis. Demographic, lifestyle, dietary and health related characteristics were compared between those who did and did not participate in screening.

RESULTS

339 participants who self-reported having colorectal cancer were included. Participants who were female, overweight (≥ 25 kg/m²), consumed less than the recommended five servings of vegetables per day, consumed ≤ 14 standard drinks per week (compared to non-drinkers) or did not meet physical activity guidelines were significantly less likely to have participated in screening.

CONCLUSION

Considerable investment has been placed in the National Bowel Cancer Screening Program and the focus now is on improving participation. Our study has taken a unique approach to identifying high-risk groups by exploring factors related to screening participation in colorectal cancer patients. These findings can further leverage the program by targeting high-risk populations to reduce the colorectal cancer burden in Australia.

Rural barriers to early lung cancer detection: Exploring access to lung cancer screening programs in New Hampshire and Vermont

BACKGROUND

Rural populations face many health disadvantages compared to urban areas. There is a critical need to better understand the current lung cancer screening landscape in these communities to identify targeted areas to improve the impact of this proven tool.

METHODS

Data from the County Health Rankings of New Hampshire and Vermont was reviewed for population density, distribution of adult smokers, and level of education compared to the distribution of Lung Cancer Screening Facilities throughout these two states.

RESULTS

Screening programs in southern counties of Vermont with lower levels of education have decreased access. In New Hampshire, there are no programs within 30 miles of the areas with the largest distribution of smokers, and decreased access in some areas with the lowest levels of education.

CONCLUSIONS

Improving equitable access to high-quality screening services in rural regions and the creation of targeted interventions to address decreased access in areas of high tobacco use and low education is vital to decreasing the incidence of latestage presentations of lung cancer within these populations.

Differential effects of colorectal cancer screening across sociodemographic groups in Denmark: a register-based study

INTRODUCTION

Colorectal cancer (CRC) does not affect different sociodemographic groups uniformly. CRC screening programmes could seek to reduce this inequality; however, the screening programmes themselves might be subject to differential participation across sociodemographic groups. This study investigates the sociodemographic inequality at all steps in Denmark's nationwide CRC screening programme: screening participation, faecal immunochemical test (FIT) results, colonoscopy compliance, CRC diagnosis, and cancer stage.

MATERIAL AND METHODS

This cohort study includes all first-time invitees from the beginning of the Danish population-based CRC screening programme from 1 March 2014 to 31 December 2017.

RESULTS

Sixty-four percent of the invitees participated in the screening programme, and of those 7% were FIT-positive. After being invited to further diagnostic procedures, 90% responded to the invitation, and among those 5% were CRC-positive. Among those diagnosed with CRC, 9% were stage IV. Through multivariable analyses, we identified sociodemographic inequalities in all steps of the screening programme from returning a stool sample to being diagnosed with CRC. Specifically, we identified inequalities across sex, age, migration status, relationship status, the screening status of one's partner, education, income, and use of health services. Women were more likely to participate compared to men (RR = 1.13; 95% CI: 1.12-1.13), but had a lower risk of a positive FIT result (RR = 0.67; 95% CI: 0.66-0.68) and of a CRC diagnosis (RR = 0.88; 95% CI: 0.82-0.93) compared to men. The likelihood of participating as well as the risk of positive FIT results and CRC diagnosis increased with age.

CONCLUSION

All steps of the screening programme were subject to sociodemographic inequalities. Interventions are needed to target groups identified as having lower uptake as well as high-risk of being FIT- and/or CRC-positive. These groups include males, individuals aged 60+ years and individuals who do not visit their GP regularly.

To do or not to do - a survey study on factors associated with participating in the Danish screening program for colorectal cancer

Background

Screening programs for colorectal cancer (CRC) exist in many countries, and with varying participation rates. The present study aimed at identifying socio-demographic factors for accepting a cost-free screening offer for CRC in Denmark, and to study if more people would accept the screening offer if the present fecal test was replaced by a blood test.

Methods

We used a cross-sectional survey design based on a representative group of 6807 Danish citizens aged 50–80 years returning a fully answered web-based questionnaire with socio-demographic data added from national registries. Data were analyzed in STATA and based on bivariate analyses followed by regression models.

Results

Danes in general have a high level of lifetime participation (+ 80%) in the national CRC screening program. The results of the stepwise logistic regression model to predict CRC screening participation demonstrated that female gender, higher age, higher income, and moderate alcohol intake were positively associated with screening participation, whereas a negative association was observed for higher educational attainment, obesity, being a smoker, and higher willingness to take health risks. Of the 1026 respondents not accepting the screening offer, 61% were willing to reconsider their initial negative response if the fecal sampling procedure were replaced by blood sampling.

Conclusion

The CRC screening program intends to include the entire population within a certain at-risk age group. However, individual factors (e.g. sex, age obesity, smoking, risk aversity) appear to significantly affect willingness to participate in the screening program. From a preventive perspective, our findings indicate the need for a more targeted approach trying to reach these groups.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12913-020-06023-6.

Factors affecting patient adherence to publicly funded colorectal cancer screening programmes: a systematic review

OBJECTIVES

Colorectal cancer (CRC) is the third most common cancer. Many countries in Europe have already implemented systematic screening programmes as per the recommendations by the European Union. The impact of screening is highly dependent on participation rates. The aim of the study was to identify barriers, facilitators and modifiers to participation in systematised, stool sample-based, publicly financed CRC screening programmes.

STUDY DESIGN

Systematic review.

METHODS

A systematic search in PubMed, Embase, MEDLINE, CINAHL, Cochrane CENTRAL, Google Scholar and PsycINFO was undertaken. We included both qualitative and quantitative studies reporting on barriers and facilitators (excluding sociodemographic variables) to participation in stool sample-based CRC screening. Barriers and facilitators to participation were summarised and analysed.

RESULTS

The inclusion criteria were met in 21 studies. Reported barriers and facilitators were categorised into the following seven themes (examples): psychology (fear of cancer), religion (believing cancer is the will of God), logistics (not knowing how to conduct the test), health-related factors (mental health), knowledge and awareness (lack of knowledge about the test), role of the general practitioner (being supported in taking the test by the general practitioner), and environmental factors (knowing someone who has participated in a screening programme). Six studies reported that non-participation was not due to a negative attitude towards screening for CRC.

CONCLUSION

Many barriers to screening were found. It is important to work with peoples' fear of screening. Moreover, this review suggests that it might be possible to increase participation rates, if the population-wide awareness and knowledge of potential health benefits of CRC screening are increased and proper logistical support is provided.

Does the Flemish colorectal cancer screening programme reach equity in FIT uptake?

BACKGROUND

To investigate colorectal cancer (CRC) screening rates by the faecal immunochemical test (FIT) according to sociodemographic characteristics and nationality.

METHODS

Men and women, aged 56-74, invited to participate in the Flemish CRC screening programme in 2013 and 2014 were included in this study. We analysed the association between CRC screening uptake and sex, age, (first and current) nationality and several proxies for socio-economic status (SES). The statistical analysis was based on descriptive analyses and logistic regression models.

RESULTS

A total of 1 184 426 persons were included in our analysis. The overall screening uptake was 52.3%, uptake varied by sex, age, nationality and SES. Lower participation rates were associated with the youngest and oldest age categories (56-60 and 70-74) and being male. All nationalities other than Belgian or Dutch were significantly less screened. Lower uptake of screening was also associated with several proxy's for low SES, such as having an allowance for being disabled, not being able to work, being an extended minor and having a social allowance/minimum wage. The descriptive analysis showed a 27% difference in CRC screening uptake between the (early) retired and the people entitled to a minimum wage.

CONCLUSIONS

There is a significant difference between screening uptake and demographic and socio-economic variables in the first 2 years of the population-based screening programme in Flanders. Based on the study results, implementing strategies to improve participation in those subgroups is needed.

Do we know the effects of colorectal cancer screening? A short communication on selective uptake and differential effects of colorectal cancer screening in Scandinavia

Colorectal cancer (CRC) contributes extensively to the overall cancer burden, with substantial and increasing social inequality in both incidence and survival. In several countries, this social inequality in incidence and survival has been increasing over time, and the increase is expected to continue. To overcome this, it is advised to implement nationwide CRC screening programmes, as these are effective in detecting possible signs of CRC, hence identifying earlier-stage cancer and reducing mortality. However, little is known about the distribution of these effects across population groups. It is possible that the outcomes of CRC screening are not equally distributed among participants, but rather that the screening programme serves some population groups better than others. The aim of this short communication based on published data is to describe the status of selective uptake according to sociodemographic and economic factors in CRC screening in Scandinavia. Furthermore, we raise questions that need to be addressed in future research in order to grasp the full effects of the screening programme and ultimately to ensure high uptake as well as participation in subsequent diagnostic procedures across population groups.

Colorectal Cancer Survival in 50- to 69-Year-Olds after Introducing the Faecal Immunochemical Test

Population screening has improved early diagnosis of colorectal cancer (CRC). Nonetheless, most cases are diagnosed in symptomatic patients. Faecal immunochemical testing has been recommended for assessing patients with lower gastrointestinal symptoms, but whether it improves patient survival is unknown. Our objective was to compare CRC survival in 50- to 69-year-olds between asymptomatic screen-detected patients and symptomatic patients by route to diagnosis. Methods: We identified all cases of CRC diagnosed in 50-to 69-year-olds between 2009 and 2016, in Donostialdea (Gipuzkoa, Spain). Three groups were created: 1-screen-detected CRC; 2-CRC detected in symptomatic patients after a positive faecal immunochemical test(FIT); and 3-CRC detected in symptomatic patients without a FIT or after a negative result. We analysed survival using the Kaplan-Meier method and log-rank tests. Results: Of 930 patients diagnosed with CRC, 433 cases were detected through screening and 497 in symptomatic patients, 7.9% after a positive FIT and 45.5% by other means. The 3-year CRC survival was significantly lower in group 3 (69.5%) than groups 1 (93%; p = 0.007) or 2 (87.5%; p = 0.02). The risk of death was lower in groups 1 (HR 0.42, 95% CI 0.30–0.58) and 2 (HR 0.51; 95% CI 0.29–0.87). Conclusion: Half of CRC cases in 50- to 69-year-olds are diagnosed outside screening. Use of the FIT as a diagnostic strategy in symptomatic patients may improve survival.

The impact of socioeconomic deprivation on the uptake of colorectal cancer screening in London

OBJECTIVE

Screening programmes based on the faecal occult blood test (FOBT) can reduce mortality from colorectal cancer (CRC). However, a significant variation exists in uptake of the test within the UK. Disproportionate uptake risks increasing inequity during staging at diagnosis and survival from CRC. This study aims to evaluate the impact of socioeconomic deprivation on the uptake of CRC screening (FOBT) in London.

METHODS

A retrospective review of the "Vanguard RM Informatics" database was performed to identify eligible individuals for CRC screening across all general practices across London over 30 months (2014-2017). The postcodes of the general practices were used to obtain the deprivation data via the "Indices of Deprivation" database. A Spearman's rho correlation was performed to quantify the impact of the deprivation variables on FOBT uptake.

RESULTS

Overall, 697,402 individuals were eligible for screening across 1359 London general practices, within 5 Clinical Commissioning Groups (CCGs); 48.4% (range: 13%-74%) participated in CRC screening with the lowest participation rates in North West (46%) and North East (47%) London CCGs. All indices of deprivation had a significant correlation with the uptake of FOBT (p < 0.01).

CONCLUSION

This is the largest study across London to date demonstrating a significant positive correlation between deprivation indices and FOBT uptake, highlighting areas of particular risk. Further studies are imperative to quantify the impact of deprivation on CRC morbidity and mortality, together with focused strategies to reduce socioeconomic inequalities in screening in these high risk areas.

The role of double-strand break repair, translesion synthesis, and interstrand crosslinks in colorectal cancer progression-clinicopathological data and survival

BACKGROUND AND OBJECTIVES

DNA repair is a new and important pathway that explains colorectal carcinogenesis. This study will evaluate the prognostic value of molecular modulation of double-strand break repair (XRCC2 and XRCC5); DNA damage tolerance/translesion synthesis (POLH, POLK, and POLQ), and interstrand crosslink repair (DCLRE1A) in sporadic colorectal cancer (CRC).

METHODS

Tumor specimens and matched healthy mucosal tissues from 47 patients with CRC who underwent surgery were assessed for gene expression of XRCC2, XRCC5, POLH, POLK, POLQ, and DCLRE1A; protein expression of Polk, Ku80, p53, Ki67, and mismatch repair MLH1 and MSH2 components; CpG island promoter methylation of XRCC5, POLH, POLK, POLQ, and DCLRE1A was performed.

RESULTS

Neoplastic tissues exhibited induction of POLK (P < .001) and DCLRE1A (P < .001) expression and low expression of POLH (P < .001) and POLQ (P < .001) in comparison to healthy paired mucosa. Low expression of POLH was associated with mucinous histology and T1-T2 tumors (P = .038); low tumor expression of POLK was associated with distant metastases (P = .042). CRC harboring POLK promoter methylation exhibited better disease-free survival (DFS) (P = .005).

CONCLUSIONS

This study demonstrated that low expression or unmethylated POLH and POLK were related to worse biological behavior tumors. However, POLK methylation was associated with better DFS. POLK and POLH are potential prognostic biomarkers in CRC.

Concurrent participation in screening for cervical, breast, and bowel cancer in England

Objectives

To determine how many women participate in all three recommended cancer screening programmes (breast, cervical, and bowel). During their early 60s, English women receive an invitation from all the three programmes.

Methods

For 3060 women aged 60–65 included in an England-wide breast screening case–control study, we investigated the number of screening programmes they participated in during the last invitation round. Additionally, using the Fingertips database curated by Public Health England, we explored area-level correlations between participation in the three cancer screening programmes and various population characteristics for all 7014 English general practices with complete data.

Results

Of the 3060 women, 1086 (35%) participated in all three programmes, 1142 (37%) in two, 526 (17%) in one, and 306 (10%) in none. Participation in all three did not appear to be a random event (p < 0.001). General practices from areas with less deprivation, with more patients who are carers or have chronic illnesses themselves, and with more patients satisfied with the provided service were significantly more likely to attain high coverage rates in all programmes.

Conclusions

Only a minority of English women is concurrently protected through all recommended cancer screening programmes. Future studies should consider why most women participate in some but not all recommended screening.

Predictors of overall and test-specific colorectal Cancer screening adherence

This study investigated predictors of overall and test-specific colorectal cancer screening (CRCS). Stool blood test (SBT) and/or colonoscopy screening were offered to primary care patients in two randomized controlled trials which assessed the impact of behavioral interventions on screening. Data were obtained through surveys and electronic medical records. Among 1942 participants, 646 (33%) screened. Exposure to interventions was associated with higher overall CRCS by twofold to threefold; older age, African American race, being married, and having a higher screening decision stage were also associated with higher overall CRCS (odds ratios = 1.30, 1.31, 1.34, and 5.59, respectively). Intervention, older age, female gender, and being married were associated with higher SBT adherence, while preference for colonoscopy was associated with lower SBT adherence. Intervention and higher decision stage were associated with higher colonoscopy adherence, while preference for SBT was associated with lower colonoscopy adherence. Among older individuals, African Americans had higher overall CRCS than whites, but this was not true among younger individuals (interaction p = .041). The higher screening adherence of African Americans over whites was due to stronger screening with a non-preferred test, i.e., higher SBT adherence only among individuals who preferred colonoscopy and higher colonoscopy adherence only among individuals who preferred SBT. Intervention exposure, sociodemographic background, and screening decision stage predicted overall CRCS adherence. Gender and test preference also affected test-specific screening adherence. Interactions involving race and test preference suggest that it is important to provide both colonoscopy and SBT screening options to patients, particularly African Americans.

Sociodemographic factors and strategies in colorectal cancer screening: a narrative review and practical recommendations

Background: Worldwide colorectal cancer is a frequently occurring cancer with a high disease burden. It is the second most frequent cancer in women and the third in men. The incidence of colorectal cancer is increasing because of ageing and unhealthy lifestyles.Aim: We aimed to perform a narrative literature review on methods and strategies for screening for colorectal cancer prior to colonoscopy.Design: Narrative literature review.Methods: The databases PubMed, Web of Science, Embase and The Cochrane Library were searched using keywords: 'colorectal cancer', '(mass) screening', 'occult blood', 'prevention', 'socioeconomic status', 'early diagnosis', 'Europe' and 'ethnicity'/'ethnic groups'.Results: 18 articles were included. Multiple randomised controlled trials have shown that screening programmes with faecal occult blood tests (FOBT), guaiac-FOBT (gFOBT) and immunochemical FOBT (iFOBT) represent a valid prevention strategy. Most studies favour iFOBT, because of ease to use, resulting in a higher uptake of screening, as well as a higher detection rate. A higher uptake is also achieved by mailing of the test. Overall the uptake of screening is higher in women, although more cancers are diagnosed in men. This can be explained by a lower sensitivity of FOBT in women. Furthermore, a strong correlation was found between a low socio-economic status and a low uptake of screening. The screening age lies between 50-74 years.Conclusion: Colorectal cancer is characterized by a significant incidence, morbidity and mortality. Systematic screening is effective for early detection. A non-selective test with iFOBT currently has the best validity with a higher sensitivity in men.

Nationwide cohort study of the impact of education, income and social isolation on survival after acute colorectal cancer surgery

Background

Acute colorectal cancer surgery has been associated with a high postoperative mortality. The primary aim of this study was to examine the association between socioeconomic position and the likelihood of undergoing acute versus elective colorectal cancer surgery. A secondary aim was to determine 1‐year survival among patients treated with acute surgery.

Methods

All patients who had undergone a surgical procedure according to the Danish Colorectal Cancer Group (DCCG.dk) database, or who were registered with stent or diverting stoma in the National Patient Register from 2007 to 2015, were reviewed. Socioeconomic position was determined by highest attained educational level, income, urbanicity and cohabitation status, obtained from administrative registries. Co‐variables included age, sex, year of surgery, Charlson Co‐morbidity Index score, smoking status, alcohol consumption, BMI, stage and tumour localization. Logistic regression analysis was performed to determine the likelihood of acute colorectal cancer surgery, and Kaplan–Meier and Cox proportional hazards regression methods were used for analysis of 1‐year overall survival.

Results

In total, 35 661 patients were included; 5310 (14·9 per cent) had acute surgery. Short and medium education in patients younger than 65 years (odds ratio (OR) 1·58, 95 per cent c.i. 1·32 to 1·91, and OR 1·34, 1·15 to 1·55 respectively), low income (OR 1·12, 1·01 to 1·24) and living alone (OR 1·35, 1·26 to 1·46) were associated with acute surgery. Overall, 40·7 per cent of patients died within 1 year of surgery. Short education (hazard ratio (HR) 1·18, 95 per cent c.i. 1·03 to 1·36), low income (HR 1·16, 1·01 to 1·34) and living alone (HR 1·25, 1·13 to 1·38) were associated with reduced 1‐year survival after acute surgery.

Conclusion

Low socioeconomic position was associated with an increased likelihood of undergoing acute colorectal cancer surgery, and with reduced 1‐year overall survival after acute surgery.

Participation in cervical cancer screening among immigrants and Danish-born women in Denmark

In this nationwide register-based cohort study, we examined cervical cancer screening participation among immigrants in Denmark by country and region of origin. Furthermore, we assessed whether differences in screening participation between immigrants and Danish-born women were explained by sociodemographic or health-related characteristics, and examined predictors of participation among immigrants. Using high-quality registries, we identified women invited for cervical cancer screening during 2008-2009 and retrieved individual-level data on sociodemographic-, health- and immigration-related characteristics. A total of 610,907 women were followed for up to 2.9 years after screening invitation. We estimated the probability of participation using the Aalen-Johansen estimator and the hazard ratios (HRs) of participation using Cox regression. The probability of participation within follow-up was 74.5% (95% CI, 74.4%-74.6%) in Danish-born women; 61.2% (95% CI, 60.4%-62.1%) in Western immigrants; and 61.3% (95% CI, 60.9%-61.8%) in non-Western immigrants. Participation in immigrants varied by region of origin from 44.3% (95% CI, 41.4%-47.4%) in immigrants from North America, New Zealand and Australia to 67.8% (95% CI, 65.4%-70.3%) in immigrants from South- and Central America. Substantial variation was seen between specific countries of origin. Differences in participation between immigrants and Danish-born women were not explained by sociodemographic or health-related characteristics. Predictors of low participation in immigrants included lower income, unemployment, being unmarried, having a history of schizophrenia or other psychoses, and ≤5 years' stay in Denmark. In conclusion, cervical cancer screening participation in immigrants varied by region and country of origin, but all immigrant groups had lower participation than Danish-born women.

Socioeconomic gradients in cancer incidence by race and ethnicity in California, 2008-2012: the influence of tobacco use or screening detectable cancers

PURPOSE

There are clearly documented inequalities in cancer incidence by socioeconomic position, but it is unclear whether this is due primarily to differences in tobacco exposure and screening practices or to other factors.

METHODS

Our study included 741,373 incident cases of invasive cancer from 2008 to 2012 in California. We calculated age-standardized incidence rates across twelve categories of census tract poverty as a measure of socioeconomic position (SEP) for (1) all cancer sites combined, (2) sites not strongly related to tobacco use, (3) sites not related to screening, and (4) sites not related to tobacco use or screening.

RESULTS

There was higher cancer incidence among those living in areas with higher levels of poverty for sites not strongly related to tobacco use or screening, among Whites, Blacks, and Asians, but not among Latinos. Among Whites there was no relationship with census tract poverty at lower levels of poverty-the relationship with cancer incidence was primarily among those in higher poverty. For Blacks and Asians, there is a more linear relationship with cancer incidence across levels of poverty.

CONCLUSIONS

SEP gradients in cancer incidence remain after exclusion of cancer sites strongly related to tobacco use and screening. Our findings demonstrate a need for research on other environmental and social causes of cancer where exposures are differentially distributed by SEP.

The cost effectiveness of Helicobacter pylori population screening-economic evaluation alongside a randomised controlled trial with 13-year follow-up

BACKGROUND

Helicobacter pylori eradication improves dyspeptic symptoms in 8%-10%, prevents peptic ulcer and may reduce the risk of gastric cancer. Availability of a high quality diagnostic test and an effective treatment makes population screening and eradication of Helicobacter pylori an attractive option.

AIM

To evaluate the cost effectiveness of Helicobacter pylori population screening and eradication.

METHODS

Cost effectiveness analysis and cost utility analysis alongside randomised controlled trial with 13 years follow-up. The evaluation has a societal perspective. A random general population sample of 20 011 individuals aged 40-65 were randomised and invited in 1998-1999; 12 530 were enrolled and, of these, 8658 have been successfully followed up at 1, 5, and 13 years after intervention. Questionnaires included the quality of life instrument SF-36. From SF-36 responses an SF-6D score was derived and used for calculation of quality-adjusted life years. Register data on costs, use of health care resources and medication were obtained for all randomised individuals. The intervention was an invitation to Helicobacter pylori screening by in-office blood test; positive tests were validated by ¹³ C-urea breath test. Those who tested positive were offered eradication therapy. Main outcome measures were Incremental cost per quality-adjusted life year and life-years gained.

RESULTS

Helicobacter pylori population screening and eradication with 13 years follow-up was not effective in regards to quality of life and the cost per screened person was higher than not screening (mean difference 11 269 DKK [95% CI: 3175-19 362]). The probability of being cost-effective was 80% at a threshold of 400 000 DKK (approximately 53,800 Euros) of willingness-to-pay per life-year gained.

CONCLUSIONS

Helicobacter pylori population screening and eradication with 13 years follow-up was not effective in regards to quality of life and the cost of screening was higher than not screening.

The effects of reminders for colorectal cancer screening: participation and inequality

PURPOSE

To investigate the effect of sending out reminders for colorectal cancer screening on socioeconomic and demographic inequalities in screening uptake.

METHODS

All citizens aged 50-74 in Denmark are invited every 2 years for colorectal cancer screening. Non-participants receive an electronically distributed reminder. Data for these analyses were derived from national registers. Socioeconomic status was measured by income and educational level. Demographic variables included age, gender and marital status, and the analyses were stratified by immigration status. Logistic regression analyses were conducted to estimate the odds of non-participation for invited citizens and for reminded citizens divided by socioeconomic and demographic predictors.

RESULTS

Of 763,511 native Danes invited for screening from 2014 to 2015, 387,116 (50.70%) participated after the initial invitation and 133,470 after receiving a reminder. Differences in participation were present in relation to all subgroups among both the invited citizens and reminded citizens. Differences persisted after full model adjustments with reductions for demographic variables. Odds ratio (OR) for non-participation in the eldest age group was 0.32 (95% CI, 0.32; 0.33) before and 1.11 (95% CI 1, 0.08; 1.14) after the reminder, compared to those under 55 years. OR for the 4th income quartile was 0.54 (95% CI, 0.53; 0.55) before and 0.44 (95% CI, 0.43; 0.45) after the reminder, compared to 1st quartile.

CONCLUSIONS

Reminders increased the overall participation, and the inequalities in participation in relation to demographic factors were reduced after the distribution of reminders. The age differences were especially reduced. The inequalities in participation related to socioeconomic status were, however, slightly increased after reminder distribution.

Utilization of Colorectal Cancer Screening among Saudi Elderly Population: A Study from the Saudi National Survey for Elderly Health

Objective: The goal of this study was to measure colorectal cancer screening (CRCS) utilization in Saudi Arabia ’s elderly population and to assess the factors associated with CRCS. Methods: The Saudi National Survey for Elderly Health was used to examine CRCS utilization. It is a nationally representative population-based cross-sectional survey that was conducted between 2006-2007. Utilization of CRCS was defined as any colonoscopy during the last five years or fecal occult blood test (FOBT) during the twelve months before the interview. Multivariable logistic regression was used to assess patients’ demographics, co-morbidities, number of visits to primary health clinics, and hospital availability and accessibility impact on CRCS. Results: The prevalence of CRCS utilization among Saudi elderly population was 5.64%. The fecal occult blood test was done in 4.4% of subjects while scope use was performed in 0.55%. In addition, 0.69% of patients have gone through both FOBT and scope use. Having blood in stools (OR=2.80; 95%CI: 1.3-6.00), Self-drivers (OR= 2.52) private driver (OR=2.1; 95%CI: 1.15-3.7) having 4 or more visits to primary care centers 1.81 (95%CI: 1.14-2.86) were positively associated with CRCS utilization. On the other hand, being single was negatively associated with CRCS utilization. Conclusion: In this nationally representative sample CRCS prevalence was very low. According to our findings and in the context of the burden of colorectal cancer on the population, we recommend developing national evidence-based policies and programs that take in consideration easiness of transportation and the availability of primary care centers near to Saudi elderly population.

The association between immigration status and ineligible stool samples for colorectal cancer screening

BACKGROUND

Barriers such as language and literacy might complicate the participation procedure for immigrants in screening programs. We investigated the delivery of a suitable stool sample for participation in the Danish colorectal cancer screening by immigration background.

METHODS

National administrative registers were used to link results of faecal blood screening with immigrant status, age, sex, education, income, and marital status. Univariate and multivariate logistic regression models were used to estimate the odds of submitting an ineligible sample.

RESULTS

558,104 individuals submitted a sample during 2014 and 2015. A total of 2,164 (0.4%) samples were ineligible for faecal analysis. The lowest proportions of ineligible samples were found in the highest educational level (0.2%) and highest income level (0.2%). The highest proportion of ineligible samples was seen in non-Western immigrants (1.6%). After adjustment for age, gender, educational level, income and marital status non-Western immigrants had an increased odds ratio (OR 3.64 CI95% 2.86;4.64) of submitting an ineligible sample, compared to native Danes. Western immigrants did not have an increased odds ratio.

CONCLUSION

Non-Western immigrants have more than three times the risk of submitting an ineligible faeces sample for colorectal cancer screening than native Danes. Translation of invitation, information leaflet, and manual into other languages or targeted information for subgroups may help decrease the risk.

Use of Colorectal Cancer Screening Among People With Mobility Disability

GOALS

We aimed to assess use of colorectal cancer screening (CRCS) as per United States Preventive Task Force guidelines among people with mobility disability using a nationally representative data set.

BACKGROUND

Individuals with mobility disability have decreased access to health care services, but the impact of mobility disability on CRCS has not been investigated.

STUDY

Data from the 2013 National Health Interview Survey were used to estimate sociodemographic characteristics of adults with mobility disability, prevalence of CRCS, and odds of CRCS given mobility disability among Americans aged 50 to 75.

RESULTS

In total, 56.8% of the entire sample (n=81,953,585) were up-to-date with CRCS. Mobility disability was not associated with CRCS status on univariable analysis but was significantly associated after adjustment for covariates including age and comorbidities, with an inverse relationship between the degree of mobility disability and odds of CRCS. Odds ratio for CRCS given progressively severe disability were 0.78 (0.66 to 0.93), 0.71 (0.53 to 0.94), 0.65 (0.31 to 1.19).

CONCLUSIONS

The present study indicates reduced CRCS among people with mobility disability and highlights the need for CRCS to be especially targeted toward this group. Future research should identify the specific systemic, social, and/or physical barriers to CRCS for this subgroup so that they can be addressed.

Differences in diagnostic activity in general practice and findings for individuals invited to the danish screening programme for colorectal cancer: a population-based cohort study

OBJECTIVE

To investigate the diagnostic activity in general practice and the cumulative incidence of colorectal cancer (CRC) in individuals invited to the Danish national screening programme for CRC.

DESIGN

A historical population-based cohort study.

SETTING

The Danish CRC screening programme and general practice.

SUBJECTS

The 376,198 individuals invited to the Danish CRC screening programme from 1 March to 31 December 2014.

MAIN OUTCOME MEASURES

The diagnostic activity (consultations and haemoglobin measures) in general practice in the year preceding the screening invitation and the cumulated incidence of CRC in the year following the screening invitation.

RESULTS

Screening participants had significantly higher diagnostic activity than non-participants. Individuals with a positive faecal immunochemical test (FIT) had higher diagnostic activity compared to individuals with a negative FIT, and a small increase in the months leading up to the invitation. Individuals with a screen-detected CRC had lower diagnostic activity than individuals with no CRC. In total, 308 (25.3%) of CRCs diagnosed in the invited population were diagnosed outside the screening programme. Non-participants with CRC more often had low socio-economic status, high comorbidity and stage IV CRC than participants with CRC.

CONCLUSIONS

There was a tendency that participants and those with a positive FIT had a higher diagnostic activity the year before the screening. This was not seen for those with CRC detected through screening. CRC must still be diagnosed in general practice in the invited population and non-participants are of special interest as they have higher risk of late stage CRC. Key Points Current awareness:Individuals with colorectal cancer (CRC) in screening may be symptomatic and CRC may still occur outside screening in the invited population. Most important points:The majority of individuals with CRC in screening cannot be expected to be diagnosed on symptomatic presentation in general practice GPs have to be aware that CRC still occurs outside screening in the invited population Non-participants with CRC are often deprived and have late stage CRC.

Socioeconomic and ethnic inequities within organised colorectal cancer screening programmes worldwide

OBJECTIVE

Colorectal cancer (CRC) screening programmes can reduce CRC mortality. However, the implementation of a screening programme may create or exacerbate socioeconomic and ethnic health inequities if participation varies by subgroup. We determined which organised programmes characterise participation inequities by socioeconomic and ethnic subgroups, and assessed the variation in subgroup participation among programmes collecting group-specific data.

DESIGN

Employing a literature review and survey among leaders of national or regional screening programmes, this study identified published and unpublished data on participation by socioeconomic status and ethnicity. We assessed programmes offering faecal occult blood tests (FOBT) for screening. Primary outcome was screening participation rate.

RESULTS

Across 24 organised FOBT-screening programmes meeting the inclusion criteria, participation rates ranged from 21% to 73%. Most programmes (13/24, 54%) did not collect data on participation by socioeconomic status and ethnicity. Among the 11 programmes with data on participation by socioeconomic status, 90% (28/31 publications) reported lower participation among lower socioeconomic groups. Differences across socioeconomic gradients were moderate (66% vs 71%) to severe (35% vs 61%). Only six programmes reported participation results by ethnicity. Ethnic differences were moderate, though only limited data were available for evaluation.

CONCLUSIONS

Across organised CRC screening programmes worldwide, variation in participation by socioeconomic status and ethnicity is often not assessed. However, when measured, marked disparities in participation by socioeconomic status have been observed. Limited data were available to assess inequities by ethnicity. To avoid exacerbating health inequities, screening programmes should systematically monitor participation by socioeconomic status and ethnicity, and investigate and address determinants of low participation.

Clinical importance of DNA repair in sporadic colorectal cancer

Colorectal cancer (CRC) is the third major cause of cancer-related deaths worldwide. However, despite the scientific efforts to provide a molecular classification to improve CRC clinical practice management, prognosis and therapeutic decision are still strongly dependent on the TNM staging system. Mismatch repair system deficiencies can occur in many organs, but it is mainly a hallmark of CRC influencing clinical outcomes and response to therapy. This review will discuss the effect of the modulation of other DNA repair pathways (direct, excision and double strand break repairs) in the clinical and pathological aspects of colorectal cancer and its potential as prognostic and predictive biomarkers.

Participants, Physicians or Programmes: Participants' educational level and initiative in cancer screening

This study is an in-depth examination of at whose initiative (participant, physician or screening programme) individuals participate in cervical, breast and colorectal cancer screening across the EU-28. Special attention is paid to (1) the association with educational attainment and (2) the country's cancer screening strategy (organised, pilot/regional or opportunistic) for each type of cancer screened. Data were obtained from Eurobarometer 66.2 'Health in the European Union' (2006). Final samples consisted of 10,186; 5443 and 9851 individuals for cervical, breast, and colorectal cancer, respectively. Multinomial logistic regressions were performed. Surprisingly, even in countries with organised screening programmes, participation in screenings for cervical, breast and colorectal cancer was most likely to be initiated by the general practitioner (GP) or the participant. In general, GPs were found to play a crucial role in making referrals to screenings, regardless of the country's screening strategy. The results also revealed differences between educational groups with regard to their incentive to participate in cervical and breast cancer screening and, to a lesser extent, in colorectal cancer screening. People with high education are more likely to participate in cancer screening at their own initiative, while people with less education are more likely to participate at the initiative of a physician or a screening programme. Albeit, the results varied according to type of cancer screening and national screening strategy.

Adherence to follow-up in high-risk adenoma patients diagnosed by, and excluded from the Barcelona colorectal cancer screening programme

INTRODUCTION

Colorectal cancer screening programmes have been shown to reduce incidence and mortality. High-risk adenomas (HRA) are the most frequently diagnosed lesions in these programmes, and these patients are referred to a specialist. However, few studies have evaluated the adherence of HRA patients to the recommended endoscopic follow-up.

OBJECTIVES

To analyse follow-up adherence and duration in patients diagnosed with HRA in a screening programme.

METHODS

Retrospective cohort study of patients diagnosed with HRA within one of the participating hospitals of the colorectal cancer screening programme of Barcelona, during the first round of the programme (2010-2011). The follow-up period was 75.5 months. Descriptive analyses, logistic regression and survival models were performed.

RESULTS

602 patients were included in the study, 66.6% of which were men. The adherence rate was 83.7% (n=504). Follow-up colonoscopy was performed within the recommended time (36±6months) in 57.7%, with a mean follow-up of 34 months. The Cox regression only showed differences at the socioeconomic level, with a lower adherence rate in the most deprived quintile (HR 0.70; 95% CI, 0.53-0.93).

CONCLUSIONS

Compared to previous studies, the follow-up adherence rate is considered to be acceptable. However, follow-up was not performed within the recommended time frame in a high proportion of cases. There is a need to further explore the reasons leading to lower follow-up adherence in the most deprived socioeconomic group and to increase the equity of the programme beyond participation.

Influencing Cancer Screening Participation Rates-Providing a Combined Cancer Screening Program (a 'One Stop' Shop) Could Be a Potential Answer

Introduction

Participation in established cancer screening programs remains variable. Therefore, a renewed focus on how to increase screening uptake, including addressing structural barriers such as time, travel, and cost is needed. One approach could be the provision of combined cancer screening, where multiple screening tests are provided at the same time and location (essentially a ‘One Stop’ screening shop). This cohort study explored both cancer screening behavior and the acceptability of a combined screening approach.

Methods

Participants of the North Western Adelaide Health Study (NWAHS), South Australia were invited to participate in a questionnaire about cancer screening behaviors and the acceptability of a proposed ‘One Stop’ cancer screening shop. Data were collected from 10th August 2015 to 18th January 2016, weighted for selection probability, age, and sex and analyzed using descriptive and multivariable logistic regression analysis.

Results

1,562 people, 52% female (mean age 54.1 years ± 15.2) participated. Reported screening participation was low, the highest being for Pap Smear (34.4%). Common reasons for screening participation were preventing sickness (56.1%, CI 53.2–59.0%), maintaining health (51%, CI 48–53.9%), and free program provision (30.9%, CI 28.2–33.6%). Females were less likely to state that screening is not beneficial [OR 0.37 (CI 0.21–0.66), p < 0.001] and to cite sickness prevention [OR 2.10 (CI 1.46–3.00), p < 0.001] and free program [OR 1.75 (CI 1.22–2.51), p < 0.003] as reasons for screening participation. Of those who did not participate, 34.6% (CI 30.3–39.1%) stated that there was nothing that discouraged them from participation, with 55- to 64-year olds [OR 0.24 (CI 0.07–0.74), p < 0.04] being less likely to cite this reason. 21% (CI 17.2–24.8%) thought they did not need screening, while a smaller proportion stated not having time (6.9%, CI 4.9–9.7%) and the costs associated with screening (5.2%, CI 3.5–7.7%). The majority of participants (85.3%, CI 81.9–88.2%) supported multiple screening being offered at the same time and location.

Conclusion

Identified screening behaviors in this study are similar to those reported in the literature. The high support for the concept of combined cancer screening demonstrates that this type of approach is acceptable to potential end users and warrants further investigation.