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. 2010 Sep 27;11:72. doi: 10.1186/1471-2296-11-72

Table 2.

Depressive symptoms by patient characteristics separately for males and females

Males (N = 2491)
n Mean (SD) Diff (95% CI) P-value

Ever afraid of partner
 Not ever afraid 2185 8.88 (9.28) Ref
 Ever afraid of partner 179 18.23 (12.61) 9.17 (7.66, 10.69) < 0.001
Hazardous drinking
 No 1841 9.09 (9.62) Ref
 Yes 620 11.52 (11.02) 2.51 (1.58, 3.45) < 0.001
Current smoker
 No 2051 8.73 (8.98) Ref
 Yes 430 14.73 (13.14) 5.84 (4.78, 6.89) < 0.001
Marital status
 Never married/single 423 13.16 (11.92) < 0.001
 Widowed/divorced/separated 321 14.09 (12.42) 0.89 (-0.59, 2.37)
 Married 1729 8.1 (8.55) -5.03 (-6.13, -3.94)
Sexuality
 Exclusively heterosexual 2240 9.4 (9.90) Ref
 Not exclusively heterosexual 147 12.76 (11.12) 3.07 (1.26, 4.88) 0.001
Live alone
 No 2171 9.03 (9.41) Ref
 Yes 314 14.74 (12.76) 5.67 (4.45, 6.89) < 0.001
Long term illness/health
problem or disability
 No 1405 7.08 (7.52) Ref
 Yes 1021 13.62 (11.90) 6.57 (5.76, 7.38) < 0.001
Health rating
 Excellent 205 4.9 (6.05) Ref < 0.001
 Very good 808 5.84 (6.32) 0.94 (-0.49, 2.37)
 Good 962 9.86 (9.17) 4.89 (3.48, 6.30)
 Fair 397 16.58 (12.18) 11.71 (10.13, 13.28)
 Poor 92 23.64 (13.46) 18.66 (16.35, 20.96)

Females (N = 4991)

n Mean (SD) Diff (95% CI) P-value

Ever afraid of partner
 Not ever afraid 3845 9.44 (9.40) Ref
 Ever afraid of partner 1022 16.19 (12.52) 6.67 (5.99, 7.36) < 0.001
Hazardous drinking
 No 4364 10.41 (10.27) Ref
 Yes 608 14.38 (11.65) 3.93 (3.05, 4.80) < 0.001
Current smoker
 No 4043 9.98 (9.82) Ref
 Yes 926 14.78 (12.33) 4.74 (4.01, 5.47) < 0.001
Marital status
 Never married/single 911 13.61 (11.50) < 0.001
 Widowed/divorced/separated 991 13.15 (12.23) -0.48 (-1.40, 0.43)
 Married 3040 9.36 (9.27) -4.22 (-4.97, -3.46)
Sexuality
 Exclusively heterosexual 4563 10.53 (10.33) Ref
 Not exclusively heterosexual 207 15.99 (12.03) 5.41 (3.98, 6.84) < 0.001
Live alone
 No 4304 10.66 (10.32) Ref
 Yes 682 12.44 (11.65) 1.85 (1.02, 2.68) < 0.001
Long term illness/health
problem or disability
 No 3552 9.5 (9.53) Ref
 Yes 1336 14.42 (12.08) 4.93 (4.30, 5.57) < 0.001
Health rating
 Excellent 557 5.58 (7.05) Ref < 0.001
 Very good 1969 7.99 (8.11) 2.47 (1.59, 3.35)
 Good 1677 12.51 (10.33) 6.96 (6.06, 7.86)
 Fair 612 17.61 (12.36) 12.08 (11.01, 13.15)
 Poor 114 26.1 (14.71) 20.48 (18.60, 22.37)

Ref = reference category for patient characteristics

SD = Standard deviation

Difference in mean depressive symptoms (Diff), respective 95% confidence intervals (CI) and p-values calculated using mixed effects linear regression using restricted maximum likelihood estimation (REML), treating GP practice as a random effect

Analysis reported separately for males and females when p-value for interaction was 10% or greater in Table 1