Total junior high school students (4257)

Male (2199)

Female (2058)

OR

95%CI

OR

95%CI

OR

95%CI

Father smokes

1.23

^*

1.03

1.48

1.23

0.97

1.56

1.21

0.91

1.61

Mother smokes

3.50

^*

2.87

4.26

3.27

^*

2.51

4.25

3.94

^*

2.91

5.34

Older brother smokes

3.32

^*

2.46

4.48

3.84

^*

2.54

5.81

3.04

^*

1.95

4.74

Older sister smokes

6.17

^*

4.11

9.26

5.81

^*

3.27

10.30

6.93

^*

3.88

12.39

Total high school students (4656)

Male (2401)

Female (2255)

OR

95%CI

OR

95%CI

OR

95%CI

Father smokes

1.59

^*

1.38

1.83

1.52

^*

1.27

1.82

1.71

^*

1.33

2.18

Mother smokes

3.26

^*

2.72

3.90

3.40

^*

2.70

4.29

2.87

^*

2.11

3.91

Older brother smokes

2.86

^*

2.34

3.51

3.02

^*

2.32

3.93

2.64

^*

1.88

3.71

Older sister smokes

4.43

^*

3.29

5.97

4.72

^*

3.01

7.38

5.37

^*

3.52

8.17