Table 2 Independent variables associated with colonoscopy adherence.

Characteristics	Odds ratio (95% CI)
Age of index patient
<65 years vs ⩾65 years	17.3 (2.5 to 117.04)
Sex of index patient
Female vs male	4.3 (1.2 to 15.3)
Family relationship*
Sibling/child vs parent	33.1 (1.3 to 811)
Hereditary type†
1 vs 2	181 (11 to 2999)
2 vs 3	1.3 (0.2 to 7.7)
Age of first‐degree relative
<65 years vs ⩾65 years	13.6 (3 to 61.7)
Sex of first‐degree relative
Female vs male	4.3 (1.2 to 15.3)

*Family relationship refers to the relationship of the relatives with the index case; this may be as a parent, sibling or offspring.

†Type 1 are those who fulfilled Amsterdam criteria II, type 2 those who fulfilled revised Bethesda guidelines and type 3 those had a family history of a first‐degree relative with sporadic colorectal cancer.