Colorectal cancer screening participation among citizens not recommended to be screened: a cohort study

BMC Gastroenterology

Table 3 Participation among residents invited for colorectal cancer screening

Groups		Invited	Participants		Adjusted* OR
Groups		N	n	% (95% CI)	Adjusted* OR
3	Average risk	585,624	391,514	66.9 (66.7; 67.0)	1
1a	CRC	5583	1594	28.6 (27.4; 29.8)	0.184 [0.173; 0.195]
1b	IBD with PSC	29	9	31.0 (15.3; 50.8)	0.228 [0.103; 0.503]
1c	Multiple polyps and polyps associated with hereditary CRC	316	151	47.8 (42.2; 53.4)	0.437 [0.350; 0.546]
2a	Ulcerative colitis without PSC	6927	3808	55.0 (53.8; 56.1)	0.597 [0.569; 0.627]
2b	Crohn's disease without PSC	2217	1213	54.7 (52.6; 56.8)	0.594 [0.546; 0.647]

CRC, colorectal cancer; IBD, inflammatory bowel disease (ulcerative colitis or Crohn's disease); PSC, primary sclerosing cholangitis
*Adjusted for sex and 5-year age group

ISSN: 1471-230X