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Table 2 Characteristics of UK Biobank participants using maximum available sample size

From: Sexual and physical abuse and depressive symptoms in the UK Biobank

Characteristic All participants
(N = 155,223)
Women
(N = 87,490)
Men
(N = 67,733)
Difference between sexes (T-test p-value)
Covariatesa
 Age (years) – mean (SD) 64.8 (7.7) 64.3 (7.7) 65.4 (7.8) < 0.001
 Ethnicity – no. White (%) 150,295 (97.2) 84,750 (97.1) 65,545 (97.2) 0.40
 Townsend deprivation index – mean (SD) −1.7 (2.8) − 1.7 (2.8) − 1.8 (2.8) < 0.001
 Body mass index (kg/m2) – mean (SD) 26.8 (4.6) 26.3 (4.9) 27.3 (4.0) < 0.001
 Lifetime depression – no. (%) 8503 (20.3) 5702 (24.5) 2801 (15.1) < 0.001
Exposureb
 Childhood sexual abuse – no. (%) 13,612 (8.8) 9673 (11.1) 3939 (5.8) < 0.001
 Childhood physical abuse – no. (%) 12,573 (8.1) 6964 (8.0) 5609 (8.3) 0.02
 Both types of abuse – no. (%) 2678 (1.8) 1946 (2.3) 732 (1.1) < 0.001
Outcomeb
Current depressive symptoms score
  PHQ-9 0 to 27 – mean (SD) 2.7 (3.7) 3.0 (3.8) 2.4 (3.5) < 0.001
  PHQ-9 ≥ 10 – no. (%) 8627 (5.7) 5454 (6.4) 3173 (4.8) < 0.001
 Sleep disturbance – no. (%) 23,364 (15.1) 14,960 (17.1) 8404 (12.4) < 0.001
 Fatigue – no. (%) 17,270 (11.1) 10,638 (12.2) 6632 (9.8) < 0.001
 Change in appetite/weight – no. (%) 8225 (5.3) 5645 (6.5) 2580 (3.8) < 0.001
 Low self-esteem – no. (%) 6616 (4.3) 4156 (4.8) 2460 (3.6) < 0.001
 Anhedonia – no. (%) 6074 (3.9) 3445 (3.9) 2629 (3.9) 0.54
 Concentration difficulties – no. (%) 5803 (3.7) 3343 (3.8) 2460 (3.6) 0.05
 Low mood – no. (%) 5362 (3.5) 3263 (3.7) 2099 (3.1) < 0.001
 Psychomotor changes – no. (%) 2176 (1.4) 1244 (1.4) 932 (1.4) 0.44
 Suicidal behaviours – no. (%) 1229 (0.8) 678 (0.8) 551 (0.8) 0.41
  1. aCovariates reported at recruitment (2006–2010)
  2. bExposure and outcome measures reported in 2016–2017