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. 2021 Apr 24;31(2):346-355.
doi: 10.1093/eurpub/ckaa203.

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

Saloa Unanue-Arza  1 , Maite Solís-Ibinagagoitia  2 , Marta Díaz-Seoane  3 , Isabel Mosquera-Metcalfe  2 , Isabel Idigoras  2   4 , Isabel Bilbao  2   4 , Isabel Portillo  2   4
Affiliations

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

Saloa Unanue-Arza et al. Eur J Public Health. .

Abstract

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.

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