Table 2.

Logistic regression of antenatal risk factors for tobacco use

	Model 1	Model 2	Model 3
Variables	OR 95% CI	OR 95% CI	OR 95% CI
Ethnic Group
White	1	1	1
Black	1.95* 1.16–3.27	1.91* 1.13–3.22	1.96* 1.14–3.36
Brown	1.50 .99–2.28	1.49 .98–2.24	1.53 0.99–2.37
Common mental disorder		1.74**	1.67*
Yes		1.18–2.54	1.12–2.48
Past psychiatric treatment		1.62	1.54
Yes		.98–2.70	.92–2.59
Age			1
16–19
20–29			0.93 0.56–1.55
30–44			1.29 0.72–2.30
Lives with partner or married			0.59*
Yes			0.38–0.90
Education (years)			0.64*
9 or more			0.42–0.96
Monthly family income (US$)			1
0–350
351–705			0.46* 0.29–0.73
706 or more			0.96 0.59–1.58

OR: odds ratio, CI: confidence interval,

^*p<0.05