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. 2020 Jun 26;15(6):e0235419. doi: 10.1371/journal.pone.0235419

Table 1. Sociodemographic and clinical characteristics of the study sample.

Women Men Total sample
mean / n SD / % mean / n SD / % p-value§ mean / n SD / %
Age, mean (SD) 23.2 (3.3) 23.6 (3.3) < .001 23.2 (3.3)
Marital status, n (%) < .001
 Single 13004 (52.9%) 5323 (44.3%) 18327 (50.1%)
 Married/partner/girl- or boyfriend 11570 (47.1%) 6683 (55.7%) 18253 (49.9%)
Immigrant status, n (%) .292
 Ethnic Norwegian 22644 (92.0%) 11056 (91.9%) 33700 (92.0%)
 Immigrant 1956 (8.0%) 969 (8.1%) 2925 (8.0%)
Economic activity, n (%) < .001
 Active 2836 (12.0%) 1874 (15.9%) 4710 (13.3%)
 Inactive 20843 (88.0%) 9894 (84.1%) 30737 (86.7%)
Body-mass index category, n (%)
 Underweight 973 (4.1%) 424 (2.1%) 1215 (3.4%)
 Normal weight 15604 (65.5%) 7234 (61.6%) 22838 (64.2%)
 Overweight 5054 (21.2%) 3355 (28.6%) 8409 (23.7%)
 Obese 2189 (9.2%) 7904 7.7%) 3090 (8.7%)
Sleep duration, mean (SD) 7:26 (1:24) 7:24 (1:24) .047 7:25 (1:24)
AUDIT sum score, mean (SD) 6.7 (4.4) 8.1 (5.1) < .001 7.3 (4.7)
Depression, n (%) 2943 (12.0%) 912 (7.6%) < .001 3855 (10.5%)
ICD-11 Chronic pain, # body regions, n (%) < .001
None 9854 (40.1%) 6914 (57.5%) 16768 (45.8%)
 1 body region 4900 (19.9%) 2355 (19.6%) 7255 (19.8%)
 2 body regions 4118 (16.7%) 1473 (12.2%) 5591 (15.3%)
 3 or more body regions 5728 (23.3%) 1283 (10.7%) 7011 (19.1%)
ICD-11 Chronic pain moderate to severe, # body regions, n (%) < .001
 None 19894 (80.9%) 11172 (92.9%) 31066 (84.8%)
 1 body region 1846 (7.5%) 434 (3.6%) 2280 (6.2%)
 2 body regions 1263 (5.1%) 235 (2.0%) 1498 (4.1%)
 3 or more body regions 1597 (6.5%) 184 (1.5%) 1781 (4.9%)

§ p-values based on overall Chi-squared analyses (categorical variables) or independent samples t-test (continuous variables)