Table 1

Descriptive characteristics of the HUNT 3 population in 2006–2008 (N=41 198)

		N	M (SD)/%
Age	Continuous	41 198	54.4 (15.7)
Polygenic risk score (z-score)
	Continuous	39 782	0 (1)
	Missing	1416	3.4
Sex
	Women	23 138	56.2
	Men	18 060	43.8
Urbanicity (2 groups)
	Rural	12 106	29.4
	Urban	28 615	69.5
	Missing	477	1.2
Urbanicity (3 groups)
	Rural	12 106	29.4
	Semiurban	16 279	39.5
	Urban	12 336	29.9
	Missing	477	1.2
Symptoms
Depression (HADS-D≥8)
	No	35 794	86.9
	Yes	3772	9.2
	Missing	1632	4.0
Depression (HADS-D≥11)
	No	38 675	93.9
	Yes	891	2.2
	Missing	1632	4.0
Anxiety (HADS-A≥8)
	No	33 677	81.7
	Yes	5594	13.6
	Missing	1927	4.7
HADS A&D≥8
	No	38 083	92.4
	Yes	1882	4.6
	Missing	1233	3.0
Mental distress (MHI≥2.15)
	No	35 471	86.1
	Yes	2682	6.5
	Missing	3045	7.4

HADS, Hospital Anxiety and Depression Scale; MHI, Mental Health Index.