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This study investigates the socio-demographic characteristics of pregnant women who stop smoking …


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Tables
- Which women stop smoking during pregnancy and the effect on breastfeeding duration

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Table 1. Smoking history of women (n = 226) and their partners (n = 270) (%)
Smoking History
Before Pregnancy
During Pregnancy
Week 4 postpartum


Women
Partners
Women
Partners
Women
Partners
Smoked
226 (100)
270 (100)
149 (66)
245 (91)
122 (54)
172 (64)
Stopped smoking
N/A
N/A
77 (34)
25 (4)
17 (8)
N/A
N/A – This data not available.

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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)
46.8
35.6
0.103
1.6 (0.9–2.8)
>25 years
53.2
64.4

1
Income 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
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 63.6
36.4

1
Cigs before preg >10/day
36.4
63.6

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

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Table 3. Multivariate analysis of factors predicting likelihood of stopping smoking during pregnancy (n = 77)

OR of stopping smoking during pregnancy (CI 95%)
p
Before pregnancy >10 cigarettes/day
0.4 (0.2–0.7)
0.002
Primiparous
2.1 (1.0–4.0)
0.036
Drank alcohol before pregnancy
2.6 (1.0–6.7)
0.049
Variables in the full model included age, income, mother's nationality, whether father smoked during the pregnancy, maternal years of education and whether the mother attended antenatal classes.

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Table 4. Stopping smoking during pregnancy and breastfeeding for longer than 6 months (n = 77)
Variable
OR breastfeeding >6 months (95% CI)
p
Stopping smoking in pregnancya
2.8 (1.6–5.1)
0.001
Stopping smoking in pregnancyb, c
3.7 (1.6–8.8)
0.003
aunadjusted
breference group is women who did not stop smoking
cadjusted for income, age of infant when mother returned to work, breastfeeding problems at or before week four postpartum, age of infant when pacifier first used and mothers infant feeding attitude (IIFAS).

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Source: BMC Public Health 2006, 6:195     


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