|
Explanatory variables
|
OR(95% CI)
|
|---|
|
Age (years)
| |
|
12-15
|
1.00‡
|
|
16-18
|
8.56(4.89-14.97)
|
|
Gender
| |
|
girl
|
1.00
|
|
boy
|
0.90(0.52-1.54)
|
|
Family socioeconomic status
| |
|
low 0-3
|
1.00
|
|
medium 4-5
|
0.43(0.26-0.71)
|
|
high 6-7
|
0.46(0.23-0.94)
|
|
Mother smoker
| |
|
No
|
1.00
|
|
Yes
|
2.56(1.49-4.39)
|
|
Father smoker
| |
|
No
|
1.00
|
|
Yes
|
1.94(1.11-3.4)
|
|
Exposure to family members' smoking
| |
|
No
|
1.00
|
|
Yes
|
1.11(0.65-1.88)
|
|
Leisure time (for one unit increase)
|
1.01(0.99-1.02)
|
|
SDQ total difficulties (for one unit increase)
|
1.13(1.08-1.18)
|
- Abbreviations: OR = Odds Ratio, CI = 95% Confidence Interval, SDQ = Strengths and Difficulties
- Questionnaire ‡ indicates reference category
