This study aimed to determine the CRC screening coverage of people aged between 50 and 69 years who were living in Spain in 2017 and describe the factors associated with not having had a faecal occult blood test (FOBT). A cross-sectional study was performed using data from the Spanish National Health Survey 2017. We analysed 7568 individuals between the ages of 50 and 69 years. The proportion of respondents between 50 and 69 years old who had had an FOBT was 29.0% (n = 2191). The three autonomous communities with the lowest proportion of respondents who had had an FOBT were Extremadura (8.7%, n = 16), Ceuta-Melilla (10.4%, n = 3), and Andalucia (14.1%, n = 186). The variables associated with not having had an FOBT were being 50-54 years old (PR = 1.09; 95% CI 1.04-1.14), having been born outside of Spain (PR = 1.11; 95% CI 1.06-1.16), not having been vaccinated against the flu (PR = 1.09; 95% CI 1.04-1.15), never having had a colonoscopy (PR = 1.49; 95% CI 1.40-1.59), not having had an ultrasound scan in the last year (PR = 1.09; 95% CI 1.04-1.14), and not having seen a primary care physician in the last month (PR = 1.08; 95% CI 1.04-1.12). The factors associated with not getting an FOBT were young age, having been born outside of Spain, not having been vaccinated against the flu in the last campaign, and not making frequent use of healthcare services.
Keywords: FOBT; associated factors; colorectal cancer; population screening; prevention programs.