Table 1 Basic demographic characteristics of the adolescent sample.

From: Genome-wide analysis of screen behaviors among adolescents identifies novel loci and overlap with educational attainment and mental disorders

Demographic characteristics of the adolescent sample (n = 18 490) from MoBa

Age when questionnaire was answered, years, mean (SD)

14.42 (0.51)

Sex assigned at birth, n (%)

  Male

8,621 (46.63%)

  Female

9,58 (53.32%)

  NA

11 (0.059%)

Gender identity, n (%)

  Boy

8,369 (45.26%)

  Girl

9,527 (51.53%)

  Trans person

42 (0.23%)

  Do not know / Do not wish to answer

254 (1.37%)

  NA

298 (1.61%)

  1. NA indicate missing values.