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Table 3 Association between secondhand smoking and depression with different exposure duration

From: Active smoking and exposure to secondhand smoke and their relationship to depressive symptoms in the Korea national health and nutrition examination survey (KNHANES)

Characteristics

Male

Female

Case N (weighted %)

ORa (95 % CI)

Case N (weighted %)

ORa (95 % CI)

Workplace exposure (N = men 14,766, women 19,804)

  

 No exposure

859 (54.8)

1.00 (ref)

2,879 (77.2)

1.00 (ref)

 <1 hour/day

389 (29.4)

0.92 (0.77–1.09)

470 (14.0)

0.89 (0.76–1.04)

 ≥1 hour/day

208 (15.8)

1.23 (0.97–1.54)

246 (8.8)

1.32 (1.06–1.64)

 

p-trend

0.256

p-trend

0.159

Home exposure (N = men 14,846, women 20,194)

  

 No exposure

1,359 (91.5)

1.00 (ref)

2,896 (75.4)

1.00 (ref)

 <1 hour/day

81 (6.6)

0.90 (0.65–1.23)

2,083 (17.1)

1.18 (1.02–1.35)

 ≥1 hour/day

24 (2.0)

1.21 (0.69–2.13)

215 (7.5)

1.71 (1.34–2.18)

 

p-trend

0.977

p-trend

<0.001

  1. aAdjusted for age, marital status, education, employment status, self-reported stress, self-rated health, alcohol dependence (AUDIT) and past diagnosis of depression by physicians