From: Which women stop smoking during pregnancy and the effect on breastfeeding duration
 | 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 | Â | 1 |
Income <$25 000 | 56 | 65.8 | 0.156 | 0.7 (0.4–1.2) |
Income >$25 000 | 44 | 34.2 | Â | 1 |
Primiparous | 55.8 | 32.9 | 0.001 | 2.6 (1.5–4.5) †|
Multiparous | 44.2 | 67.1 | Â | 1 |
Caucasian | 90.9 | 96.6 | 0.068 | 0.3 (0.1–1.1) |
Non-caucasian | 9.1 | 3.4 | Â | 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 | Â | 1 |
<12 years education | 46.1 | 62.8 | 0.016 | 0.5 (0.3–0.9) †|
>12 years education | 53.9 | 37.2 | Â | 1 |
Drank alcohol before pregnancy | 87 | 72.3 | 0.012 | 2.6 (1.2–5.5) †|
Non-drinker before pregnancy | 13 | 27.7 | Â | 1 |
Alcohol during preg | 40.3 | 38.9 | 0.846 | 1.1 (0.6–1.9) |
No alcohol in preg | 59.7 | 61.1 | Â | 1 |
Cigs before preg <10/day | 63.6 | 36.4 | Â | 1 |
Cigs before preg >10/day | 36.4 | 63.6 | <0.001 | 0.3 (0.2–0.6) †|
Timing of pregnancy | Â | Â | 0.045 | Â |
Planned | 44 | 37.3 | Â | 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 | Â | 1 |
Did not attend antenatal classes | 66.2 | 48 | 0.009 | 0.5 (0.3–0.8) †|