Table 1 Characteristics of relatives and index cases associated with adherence rate.

Characteristics	Results (%)	p Value
Age of index patient (%)
<65 years	60	0.027
⩾65 years	32.9
Sex of index patient (%)
Male	42.3	0.28
Female	34.1
Hereditary type (%)*
1	88.9	0.005
2	34.1
3	32.5
Family relationship† (%)
Sibling/child	40.7	0.16
Parent	14.3
Age of first‐degree relative (%)
<65 years	53.7	0.000
⩾65 years	17.9
Sex of first‐degree relative (%)
Male	27.3	0.026
Female	49

*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.

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