Table 2 Association between smoking status (current, former and secondhand smoke (SHS)) and depressive symptoms

Men

 Smoking status

 Current

 No exposure to SHS

3,859 (26.6)

470 (29.8)

1.15 (0.86–1.55)

 SHS at home only

526 (3.7)

85 (6.5)

1.42 (0.92–2.18)

 SHS at workplace only

3,120 (26.2)

339 (25.4)

1.13 (0.83–1.54)

 SHS at both home and workplace

525 (5.0)

75 (6.0)

1.03 (0.69–1.55)

 Former

 No exposure to SHS

1,752 (10.0)

156 (8.7)

1.01 (0.72–1.41)

 SHS at home only

68 (0.5)

14 (0.7)

1.27 (0.56–2.88)

 SHS at workplace only

907 (7.3)

84 (6.5)

1.17 (0.79–1.71)

 SHS at both home and workplace

51 (0.5)

3 (0.3)

0.59 (0.16–2.16)

 Never

 No exposure to SHS

1,409 (10.6)

123 (8.1)

1.00 (ref)

 SHS at home only

102 (1.0)

10 (1.0)

1.10 (0.46–2.65)

 SHS at workplace only

889 (7.6)

85 (5.7)

1.12 (0.76–1.64)

 SHS at both home and workplace

96 (1.0)

11 (1.3)

2.05 (0.83–5.10)

Women

 Smoking status

 Current

 No exposure to SHS

630 (4.2)

217 (6.4)

1.25 (1.00–1.56)

 SHS at home only

283 (2.0)

131 (4.4)

1.43 (1.04–1.96)

 SHS at workplace only

214 (1.7)

68 (2.4)

1.26 (0.87–1.83)

 SHS at both home and workplace

142 (1.1)

56 (2.2)

1.57 (0.96–2.55)

 Former

 No exposure to SHS

283 (2.0)

70 (2.3)

1.04 (0.72–1.51)

 SHS at home only

50 (0.4)

17 (0.9)

2.32 (1.04–5.16)

 SHS at workplace only

71 (0.6)

22 (1.0)

1.60 (0.82–3.13)

 SHS at both home and workplace

22 (0.2)

6 (0.3)

1.73 (0.53–5.62)

 Never

 No exposure to SHS

9,932 (56.4)

1,985 (48.8)

1.00 (ref)

 SHS at home only

1,782 (12.0)

459 (14.4)

1.25 (1.08–1.43)

 SHS at workplace only

1,993 (13.3)

373 (11.0)

0.99 (0.84–1.17)

 SHS at both home and workplace

805 (6.0)

191 (5.9)

1.12 (0.99–1.40)