Abstract

Abstract 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 ± 6 months) 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.

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