Table 2.

Characteristics of women who did and did not stop smoking in pregnancy (n = 226). Figures are percentages if not otherwise stated

	Women who stopped smoking (n = 77)	Women who did not stop smoking (n = 149)	p value	Univariate OR (95% CI)
<25 years	46.8	35.6	0.103	1.6 (0.9–2.8)
>25 years	53.2	64.4		1
Income <$25 000	56	65.8	0.156	0.7 (0.4–1.2)
Income >$25 000	44	34.2		1
Primiparous	55.8	32.9	0.001	2.6 (1.5–4.5)†
Multiparous	44.2	67.1		1
Caucasian	90.9	96.6	0.068	0.3 (0.1–1.1)
Non-caucasian	9.1	3.4		1
Father smoked in pregnancy	61	75.5	0.025	0.5 (0.3–0.9)†
Father did not smoke in pregnancy	39	24.5		1
<12 years education	46.1	62.8	0.016	0.5 (0.3–0.9)†
>12 years education	53.9	37.2		1
Drank alcohol before pregnancy	87	72.3	0.012	2.6 (1.2–5.5)†
Non-drinker before pregnancy	13	27.7		1
Alcohol during preg	40.3	38.9	0.846	1.1 (0.6–1.9)
No alcohol in preg	59.7	61.1		1
Cigs before preg <10/day	63.6	36.4		1
Cigs before preg >10/day	36.4	63.6	<0.001	0.3 (0.2–0.6)†
Timing of pregnancy			0.045
Planned	44	37.3		1
Mistimed	41.3	32.4		1.1 (0.6–2.0)
Unplanned	14.7	30.3		0.4 (0.2–0.9)†
Attend antenatal classes	33.8	52		1
Did not attend antenatal classes	66.2	48	0.009	0.5 (0.3–0.8)†

^†Significant at p = 0.05. Significant figures in bold