| Secondhand smoke exposure | |||
---|---|---|---|---|
None | < 1 h/daily | 1–2 h/daily | ≥3 h/daily | |
Reference | OR (95% CI) | OR (95% CI) | OR (95% CI) | |
Model 1 | ||||
 Total SDQ score | 1 | 1.60 (1.38 to 1.86) | 2.44 (2.02 to 2.96) | 2.75 (2.20 to 3.43) |
 Emotional symptoms | 1 | 1.49 (1.26 to 1.76) | 1.98 (1.59 to 2.48) | 2.16 (1.66 to 2.81) |
 Conduct problems | 1 | 1.46 (1.24 to 1.72) | 2.03 (1.64 to 2.52) | 2.20 (1.71 to 2.83) |
 Hyperactivity-inattention | 1 | 1.37 (1.22 to 1.53) | 1.79 (1.53 to 2.09) | 2.14 (1.79 to 2.57) |
 Peer relationship problems | 1 | 1.46 (1.33 to 1.61) | 1.70 (1.48 to 1.94) | 1.52 (1.29 to 1.80) |
 Prosocial behaviors | 1 | 1.17 (0.99 to 1.38) | 1.34 (1.06 to 1.68) | 1.46 (1.11 to 1.91) |
Model 2 | ||||
 Total SDQ score | 1 | 1.42 (1.22 to 1.66) | 2.14 (1.76 to 2.62) | 2.53 (2.01 to 3.18) |
 Emotional symptoms | 1 | 1.38 (1.16 to 1.64) | 1.84 (1.46 to 2.31) | 2.05 (1.57 to 2.68) |
 Conduct problems | 1 | 1.36 (1.15 to 1.61) | 1.88 (1.50 to 2.34) | 2.09 (1.61 to 2.70) |
 Hyperactivity-inattention | 1 | 1.24 (1.10 to 1.39) | 1.58 (1.35 to 1.86) | 1.98 (1.65 to 2.38) |
 Peer relationship problems | 1 | 1.25 (1.13 to 1.38) | 1.41 (1.23 to 1.63) | 1.36 (1.14 to 1.61) |
 Prosocial behaviors | 1 | 1.06 (0.90 to 1.26) | 1.14 (0.89 to 1.44) | 1.37 (1.03 to 1.82) |