Table 1. Sample sizes.

	20–40 years		40–60 years		60–80 years
	Men	Women	Men	Women	Men	Women
Complete sample	3237	4817	6694	7944	4084	3948
Genotyped sample	2029	2740	3081	3794	1925	2037
HUNT2/HUNT3 sample	993*	1505*	5216	6397	3693	3660

Sample sizes gender-wise for each age group, 20–40 years (*30–40 years in HUNT2-HUNT3 analysis because individuals younger than 30 years in HUNT3 did not participate in HUNT2), 40–60 years and 60–80 years. Genotyped sample refers to individuals who were genotyped based on the extreme phenotype criteria.