Table 2.

Variables associated with current smoking (Bi-variate analysis)

	Total Odds ratio (95% confidence interval)	Males Odds ratio (95% confidence interval)	Females Odds ratio (95% confidence interval)
Age (years)
11–12	1.00	1.00	1.00
13	0.30 [0.22, 0.41]	0.56 [0.35, 0.89]	0.20 [0.11, 0.35]
14	0.50 [0.31, 0.79]	0.63 [0.40, 0.97]	0.47 [0.36, 0.63]
15	1.05 [0.81, 1.38]	1.65 [1.09, 2.51]	1.04 [0.66, 1.64]
16–17	5.27 [2.96, 9.39]	7.21 [4.42, 11.76	4.89 [3.48, 6.86]
Gender
Females	1.00
Males	1.26 [1.05, 1.50]
Education father/stepfather
Elementary school or less	1.00	1.00	1.00
Middle school	0.81 [0.56, 1.17]	0.76 [0.58, 1.00]	0.85 [0.55, 1.33]
High school	0.53 [0.40, 0.69]	0.47 [0.33, 0.68]	0.60 [0.41, 0.90]
University	0.52 [0.42, 0.69]	0.54 [0.39, 0.75]	0.49 [0.32, 0.77]
Education mother/stepmother
Elementary school or less	1.00	1.00	1.00
Middle school	1.00 [0.74, 1.34]	0.95 [0.62, 1.46]	0.71 [0.47, 1.08]
High school	0.54 [0.41, 0.71]	0.48 [0.32, 0.71]	0.61 [0.41, 0.93]
University	0.53 [0.41, 0.71]	0.55 [0.38, 0.81]	0.61 [0.42, 0.89]
Parental smoking
None	1.00	1.00	1.00
Father only	1.57 [1.22, 2.02]	1.87 [1.34, 2.61]	1.27 [0.82, 1.97]
Mother only	1.38 [1.00, 1.89]	1.11 [0.69, 1.81]	1.67 [1.07, 2.60]
Both parents	2.48 [1.99, 3.09]	2.72 [1.98, 3.74]	2.13 [1.54, 2.96]
Perception cigarettes smoking harmful
Definitely not or probably not	1.00	1.00	1.00
Definitely yes or probably yes	1.20 [0.92, 1.56]	1.13 [0.88, 1.45]	1.23 [1.04, 1.47]
Pocket money
< 7 Euro	1.00	1.00	1.00
8–15 Euro	2.29 [1.53, 3.41]	2.06 [1.23, 3.45]	3.14 [1.50, 6.60]
16–23 Euro	3.39 [2.34, 4.91]	3.31 [2.03, 5.39]	4.91 [2.47, 9.75]
24–31 Euro	4.15 [2.78, 6.20]	4.03 [2.37, 6.85]	6.04 [2.92, 12.47]
>=32 Euro	7.26 [4.73, 11.14]	6.78 [3.86, 11.91]	10.96 [5.09, 23.58]