scholarly journals Strongly Divergent Impact of Adherence Patterns on Efficacy of Colorectal Cancer Screening: The Need to Refine Adherence Statistics

Author(s):  
Thomas Heisser ◽  
Rafael Cardoso ◽  
Feng Guo ◽  
Tobias Moellers ◽  
Michael Hoffmeister ◽  
...  

AbstractObjectiveThe performance of colorectal cancer (CRC) screening programs depends on the adherence to screening offers. However, identical adherence levels may result from varying patterns of the population’s screening behavior. We quantified the effects of different adherence patterns on the long-term performance of CRC screening for annual fecal immunochemical testing (FIT) and screening colonoscopy at ten-year intervals.DesignUsing a multistate Markov model, we simulated scenarios where, while at the same overall adherence level, a certain proportion of the population adheres to all screening offers (‘selective’ adherence) or the entire population uses the screening offers at some point(s) of time, albeit not in the recommended frequency (‘sporadic’ adherence). Key outcomes for comparison were the numbers of prevented CRC deaths and prevented years of potential life lost (YPLL) after 50 simulated years.ResultsFor screening with annual FIT at adherence levels of 10-50%, ratios of prevented CRC deaths (YPLL) resulting from a sporadic versus a selective pattern ranged from 1.9-5.0 (1.9-5.0) for men and from 1.8-4.1 (1.8-4.3) for women, i.e. up to 4-5 times more CRC deaths and YPLL were prevented when the population followed a sporadic instead of a selective adherence pattern. Comparisons of simulated scenarios for screening colonoscopy revealed similar patterns.ConclusionAt the same overall level of adherence, ‘sporadic’ adherence patterns go along with much larger preventive effects than ‘selective’ adherence patterns. Screening programs should prioritize efforts to reach as many people as possible at least sporadically over efforts to maximize full adherence to repeat screening offers. Adherence statistics should be refined to better reflect ‘effective adherence’.What You Need to KnowBACKGROUND AND CONTEXTThe evidence on long-term effects of different patterns of longitudinal adherence (e.g. consistent or sporadic uptake) to colorectal cancer screening offers is limited.NEW FINDINGSIn a simulated hypothetical German population, at identical overall participation levels, large proportions of the population making sporadic use of screening offers were up to 4-5 times more beneficial to achieve sustained reductions of colorectal cancer mortality than small proportions of the population utilizing screening offers at the recommended frequency.LIMITATIONSThis study is limited by model simplifying assumptions and uncertainties related to input parameters.IMPACTEfforts to increase screening uptake should be concentrated on groups of consistent non-responders, e.g. by low-threshold screening offerings, such as directly mailed stool tests. Adherence statistics should be refined to better reflect “effective adherence”.SHORT SUMMARYThis simulation study demonstrates that commonly used adherence metrics for colorectal cancer screening do not sufficiently cover the effect of varying patterns of longitudinal adherence, which may considerably impact the long-term efficacy of screening programs.

Author(s):  
Alicia Brotons ◽  
Mercedes Guilabert ◽  
Francisco Lacueva ◽  
José Mira ◽  
Blanca Lumbreras ◽  
...  

Colonoscopy services working in colorectal cancer screening programs must perform periodic controls to improve the quality based on patients’ experiences. However, there are no validated instruments in this setting that include the two core dimensions for optimal care: satisfaction and safety. The aim of this study was to design and validate a specific questionnaire for patients undergoing screening colonoscopy after a positive fecal occult blood test, the Colonoscopy Satisfaction and Safety Questionnaire based on patients’ experience (CSSQP). The design included a review of available evidence and used focus groups to identify the relevant dimensions to produce the instrument (content validity). Face validity was analyzed involving 15 patients. Reliability and construct and empirical validity were calculated. Validation involved patients from the colorectal cancer screening program at two referral hospitals in Spain. The CSSQP version 1 consisted of 15 items. The principal components analysis of the satisfaction items isolated three factors with saturation of elements above 0.52 and with high internal consistency and split-half readability: Information, Care, and Service and Facilities features. The analysis of the safety items isolated two factors with element saturations above 0.58: Information Gaps and Safety Incidents. The CSSQP is a new valid and reliable tool for measuring patient’ experiences, including satisfaction and safety perception, after a colorectal cancer screening colonoscopy.


2010 ◽  
Vol 06 (01) ◽  
pp. 51 ◽  
Author(s):  
Gunter Weiss ◽  
Thomas Rösch ◽  
◽  

Despite clear evidence for a better prognosis when detected early, in most countries colorectal cancer (CRC) has a low compliance rate in terms of screening. There are several methods of CRC screening ranging from a variety of stool tests, e.g. faecal occult blood test (FOBT), to endoscopy (sigmoidoscopy, colonoscopy). A blood test for CRC detection is a new alternative, at least for patients not willing to accept screening colonoscopy or to undergo FOBT. The septin 9 biomarker is a potential candidate to fulfil this purpose. It has been validated in several case–control studies, showing a strong association of plasma-containing methylated DNA within the septin 9 gene (mSEPT9) with the presence of CRC. If sensitive methylated-DNA-detection technologies are used formSEPT9 detection in blood plasma samples, sensitivities of about 50% for stage I, 70–80% for stages II and III and 90–100% for stage IV at a specificity of ≥90% have been reported in these studies. Screening experts assume that such a blood-based test will increase compliance to CRC screening. Further studies are ongoing or have just been completed, including a large prospective screening trial involving 8,000 individuals in the US and Germany. The main objectives of this clinical investigation, called Prospective Evaluation of Septin 9 Performance for Colorectal Cancer Screening (PRESEPT), are to determine the performance of the septin 9 test for identification of CRC in a screening population and to demonstrate the health economic benefit of septin 9 in this setting. Results are expected in April 2010. This article presents an update on current analytical and clinical data onmSEPT9.


Endoscopy ◽  
2020 ◽  
Author(s):  
Luca Benazzato ◽  
Manuel Zorzi ◽  
Giulio Antonelli ◽  
Stefano Guzzinati ◽  
Cesare Hassan ◽  
...  

Abstract Background Post-colonoscopy adverse events are a key quality indicator in population-based colorectal cancer screening programs, and affect safety and costs. This study aimed to assess colonoscopy-related adverse events and mortality in a screening setting. Methods We retrieved data from patients undergoing colonoscopy within a screening program (fecal immunochemical test every 2 years, 50–69-year-olds, or post-polypectomy surveillance) in Italy between 2002 and 2014, to assess the rate of post-colonoscopy adverse events and mortality. Any admission within 30 days of screening colonoscopy was reviewed to capture possible events. Mortality registries were also matched with endoscopy databases to investigate 30-day post-colonoscopy mortality. Association of each outcome with patient-/procedure-related variables was assessed using multivariable analysis. Results Overall, 117 881 screening colonoscopies (66 584, 56.5 %, with polypectomy) were included. Overall, 497 (0.42 %) post-colonoscopy adverse events occurred: 281 (0.24 %) bleedings (3.69‰/0.68‰, operative/diagnostic procedures) and 65 (0.06 %) perforations (0.75‰/0.29‰, respectively). At multivariable analysis, bleeding was associated with polyp size (≥ 20 mm: odds ratio [OR] 16.29, 95 % confidence interval [CI] 9.38–28.29), proximal location (OR 1.46, 95 %CI 1.14–1.87), and histology severity (high risk adenoma: OR 5.6, 95 %CI 2.43–12.91), while perforation was associated with endoscopic resection (OR 2.91, 95 %CI 1.62–5.22), polyp size (OR 4.34, 95 %CI 1.46–12.92), and proximal location (OR 1.94, 95 %CI 1.12–3.37). Post-colonoscopy mortality occurred in 15 /117 881 cases (1.27/10 000 colonoscopies). Conclusions In an organized screening program, post-colonoscopy adverse events were rare but not negligible. The most frequent event was post-polypectomy bleeding, especially after resection of large (≥ 20 mm) and proximal lesions.


2019 ◽  
Vol 10 ◽  
pp. 215013271989095
Author(s):  
Jamie H. Thompson ◽  
Jennifer L. Schneider ◽  
Jennifer S. Rivelli ◽  
Amanda F. Petrik ◽  
William M. Vollmer ◽  
...  

Background: Colorectal cancer screening (CRC) rates are low, particularly among individuals with low socioeconomic status. Organized CRC screening programs have demonstrated success in increasing screening rates. Little is known about provider attitudes, beliefs, and practices related to CRC screening or how they are influenced by an organized CRC screening program. Methods: In 2014 and 2016, providers from 26 safety net clinics in Oregon and Northern California were invited to complete baseline and follow-up online surveys for the Strategies and Opportunities to Stop Colon Cancer in Priority Populations (STOP CRC) study. The provider survey link was sent electronically to primary care providers serving adult patients. Providers were sent reminders every 2 weeks via email to complete the survey, up to 3 reminders total. In this article, we describe learnings about provider attitudes, beliefs, and practices related to CRC screening after implementation of the STOP CRC program. Results: A total of 166 unique providers completed baseline and/or follow-up surveys, representing 228 responses. Main themes included (1) favorable shifts in attitude toward fecal immunochemical test (FIT) and direct-mail cancer screening programs, (2) changes in provider perception of key barriers, and (3) growing interest in centralized automated systems for identifying patients due for CRC screening and eligible for population-based outreach. Discussion: Providers are interested in improved information systems for identifying patients due for CRC screening and delivering population-based outreach (ie, to distribute FIT kits outside of the clinic visit) to help reduce health system- and patient-level barriers to screening. Trial Registration: National Clinical Trial (NCT) Identifier NCT01742065.


2020 ◽  
Vol 38 (15_suppl) ◽  
pp. e16091-e16091
Author(s):  
Chia-Jen Liu ◽  
Tzu-Yu Lai ◽  
Chiu-Mei Yeh ◽  
Chun-Kuang Tsai ◽  
Po-Min Chen ◽  
...  

e16091 Background: Colorectal cancer (CRC) is one of the highest-incident neoplasms in many countries. Although the incidence of CRC is increasing gradually, the mortality rate has not increased due to early detection and multidisciplinary treatment. CRC screening programs, including colonoscopy and fecal occult blood tests, have been reducing CRC-related mortality worldwide. In Taiwan, the CRC screening program uses a biennial fecal immunochemical test (FIT) as the initial screening tool. FIT-positive participants receive a colonoscopy as a CRC confirmation examination. Cancer survivors have a higher incidence of secondary primary malignancies. Methods: We conducted a nationwide population-based study in Taiwan. The cancer survivors with FIT in the Nationwide Colorectal Cancer Screening (NCCS) Program between January 2010 and September 2014 were enrolled as the study group. The patients aged under 50, diagnosed with CRC before the FIT were excluded. The screening participants without a cancer history were served as the comparison group. The primary endpoint was CRC diagnosis within six months after a FIT. The cancer diagnosis was identified by using Taiwan Cancer Registry. The ratios of positive FIT, confirmatory colonoscopy, and CRC diagnosis in the cancer survivors and the comparison cohort were calculated and compared. Analyses were adjusted for participants’ characteristics by using multilevel logistic regression models. Results: We identified 288,919 cancer survivors who participated in the NCCS Program. Of them, 41.1% were male and the median age was 59 (interquartile ranges 54–64). There were 417,907 FITs performed in the study cohort. The FIT positive rates were 11.3% and 7.4% in the study and comparison groups, respectively (OR 1.59 95% CI 1.57–1.60). Of the FIT positive participants, 50.5% and 52.3% received confirmatory colonoscopy or the related examinations within six months, respectively (OR 0.93 95% CI 0.91–0.95). Then 3.0% and 4.4% of those receiving confirmatory colonoscopy were diagnosed with CRC in the study and comparison groups, respectively (OR 0.68 95% CI 0.63–0.74). After adjustment for age, sex, income, a family history of CRC, and comorbidities, the cancer survivors in this screening program had a similar rate of CRC diagnosis compared with those without antecedent malignancies (adjusted OR: 0.97, 95% CI 0.87–1.08). Conclusions: Although the cancer survivors had a higher rate of positive FIT, the CRC diagnosed by the screening did not increase. We further identified the risk factors associated with CRC in the cancer survivors.


2020 ◽  
Vol 30 (Supplement_5) ◽  
Author(s):  
O Majek ◽  
O Ngo ◽  
B Seifert ◽  
S Suchanek ◽  
M Zavoral ◽  
...  

Abstract Issue Colorectal cancer (CRC) has been among the most important cancer causes of death globally. CRC screening and early detection can decrease CRC incidence and mortality through timely removal of colorectal neoplasia or early CRC treatment. CRC screening has been initiated in the Czech Republic in 2000 for individuals over 50, with GPs having a key role in recruiting individuals to screening, offering faecal occult blood test (FOBT). Screening colonoscopy (CS) was added for individuals over 55 since 2009. Description of the problem To increase uptake of CRC screening, personal invitation of non-attenders under 70 was implemented in 2014, along with temporary mass-media campaign. Health insurance companies have been sending invitations to those individuals without record of recent FOBT, CS or CRC treatment. The aim of our study was to evaluate impact of this policy on complete coverage by examination over 2013-2018. We defined the complete coverage by examination as the proportion of individuals aged 50-69 undergoing examination with CRC early detection potential (FOBT or CS for any indication) during past 3 years. We used newly established National Registry of Reimbursed Health Services as the source of data. Results Complete coverage of the target population (2.7 million individuals aged 50-69) was 44.8 % in 2013. By 2016, the coverage increased to 54.6%. Therefore, almost 300,000 individuals were newly covered by the relevant examinations. By 2018, the coverage decreased to 51.2%. When we consider only screening FOBT examinations, the coverage was 36.9 % in 2013, 45.2% in 2016, and 42.0% in 2018. Lessons In the health system with accessible CS facilities, the policy of non-attenders' invitation for CRC screening resulted not only in increase in coverage by screening examinations; complete coverage also increased. Unfortunately, the positive effect has been fading out, and further actions to sustain high coverage are therefore warranted. Key messages Invitation of non-attenders to colorectal cancer screening increased complete coverage of the target population by examination. Initial increase was followed by a slow decrease in coverage by examination, underlying the need for other actions to increase participation.


2012 ◽  
Vol 26 (12) ◽  
pp. 902-904 ◽  
Author(s):  
Maida J Sewitch ◽  
Mengzhu Jiang ◽  
Alan N Barkun ◽  
David Armstrong ◽  
Donna Manca ◽  
...  

The present report summarizes the proceedings of the pan-Canadian Expert Forum on Using Information Technology to Facilitate Uptake and Impact of Colorectal Cancer Screening Guidelines, which was held in Montreal, Quebec, November 18 to 19, 2011. The meeting assembled a multidisciplinary group of family physicians, gastroenterologists, nurses, patients, foundation representatives, screening program administrators and researchers to discuss the development of a mechanism or strategy that would permit the collection of comparable data by all colorectal cancer (CRC) screening programs, which would not only support the needs of each program but also provide a national perspective. The overarching theme of the meeting was ‘designing a national approach to computerized electronic data collection and dissemination for CRC screening that would improve knowledge transfer across the continuum of preventive health care’. The forum encouraged presentations on clinical, research and technical topics. The meeting fostered valuable cross-disciplinary communication and delivered the message that it is essential to develop a national health informatics approach for CRC screening data collection and dissemination to support provincial CRC screening programs.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Hiroaki Saito ◽  
Akihiko Ozaki ◽  
Michio Murakami ◽  
Yoshitaka Nishikawa ◽  
Toyoaki Sawano ◽  
...  

AbstractColorectal cancer (CRC) screening is a well-established cancer screening method, and its effectiveness depends on maintaining a high participation rate in the target population. In this study, we analyzed the trends in CRC screening participation rates over 10 years in Minamisoma City, where residents were forced to evacuate after the 2011 triple disaster in Fukushima, Japan. The immunochemical fecal occult blood test is provided as municipal CRC screening. We calculated the annual CRC screening participation rate and analyzed the factors associated with participation in screening. Overall, 4069 (12.3%) and 3839 (11.7%) persons participated in CRC screening in 2009 and 2010, respectively; however, the number decreased significantly to 1090 (3.4%) in 2011 when the earthquake occurred. Over the following 3 years, the rate gradually recovered. Multivariable logistic analysis showed that age < 65 years, living alone, and evacuation were significant associated factors for non-participation after 2011 (p < 0.05). In conclusion, the CRC screening participation rate decreased significantly during the Great East Japan Earthquake but recovered over the next 3 years. Further analysis of factors preventing CRC screening participation and research on the long-term effects of its post-disaster decline are important to consider in assessing the need for intervention in post-disaster cancer screening.


Cancers ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 1129
Author(s):  
Audrius Dulskas ◽  
Tomas Poskus ◽  
Inga Kildusiene ◽  
Ausvydas Patasius ◽  
Rokas Stulpinas ◽  
...  

We aimed to report the results of the implementation of the National Colorectal Cancer (CRC) Screening Program covering all the country. The National Health Insurance Fund (NHIF) reimburses the institutions for performing each service; each procedure within the program has its own administrative code. Information about services provided within the program was retrieved from the database of NHIF starting from the 1 January 2014 to the 31 December 2018. Exact date and type of all provided services, test results, date and results of biopsy and histopathological examination were extracted together with the vital status at the end of follow-up, date of death and date of emigration when applicable for all men and women born between 1935 and 1968. Results were compared with the guidelines of the European Union for quality assurance in CRC screening and diagnosis. The screening uptake was 49.5% (754,061 patients) during study period. Participation rate varied from 16% to 18.1% per year and was higher among women than among men. Proportion of test-positive and test-negative results was similar during all the study period—8.7% and 91.3% annually. Between 9.2% and 13.5% of test-positive patients received a biopsy of which 52.3–61.8% were positive for colorectal adenoma and 4.6–7.3% for colorectal carcinoma. CRC detection rate among test-positive individuals varied between 0.93% and 1.28%. The colorectal cancer screening program in Lithuania coverage must be improved. A screening database is needed to systematically evaluate the impact and performance of the national CRC screening program and quality assurance within the program.


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