Patterns of Smoking Behaviour in Low-Income Pregnant Women: A Cohort Study of Differential Effects on Infant Birth Weight.

In contrast, term babies of mothers with four or more additional smokers in the home were on average 187–195 g smaller than those with no additional home smokers; however, the difference in effect size did not reach statistical significance; (Model 1 (95% CI: −388–14 g), p = 0.07); (Model 2 (95% CI: −395–4 g), p = 0.05) ( Table 2 and Table 3 ). 3.4.

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The sustained quitters were on average 177 g heavier than the partial quitters although this difference did not quite reach statistical significance (95% CI: −5–358 g), p = 0.057. 3.2.

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