OBJECTIVE: To determine whether maternal smoking during pregnancy causes impairment in growth after birth. DESIGN: Longitudinal study. SETTING: Six medical university centres of six towns of north, central, and south Italy. SUBJECTS: 12,987 babies (10,238 born from non-smoking mothers, 2276 from mothers smoking one to nine cigarettes a day, and 473 from mothers smoking > or = 10 cigarettes a day) entered the study. MAIN OUTCOME MEASURES: Difference in weight gain between children born to smoking mothers and those born to non-smoking mothers. Weight was measured at birth and at 3 and 6 months of age. Maternal smoking habit was derived from interview on third or fourth day after delivery. RESULTS: Compared with children born to mothers who did not smoke during pregnancy, the birth weights of children born to mothers who smoked up to nine cigarettes a day were 88 g (girls) and 107 g (boys) lower; in children born to mothers who smoked > or = 10 cigarettes a day weights were 168 g and 247 g lower. At six months of age for the first group the mean weight for girls was 9 g (95% confidence interval -47 g to 65 g) higher and for boys 64 g (-118 g to -10 g) lower than that of children born to mothers who did not smoke. The corresponding figures for the second group were 28 g (-141 g to 85 g) lower for girls and 24 g (-136 g to 88 g) lower for boys. CONCLUSIONS: The deficits of weight at birth in children born to mothers who smoked during pregnancy are overcome by 6 months of age. These deficits are probably not permanent when smoking habit during pregnancy is not associated with other unfavourable variables (such as lower socioeconomic class).
OBJECTIVE: To determine whether maternal smoking during pregnancy causes impairment in growth after birth. DESIGN: Longitudinal study. SETTING: Six medical university centres of six towns of north, central, and south Italy. SUBJECTS: 12,987 babies (10,238 born from non-smoking mothers, 2276 from mothers smoking one to nine cigarettes a day, and 473 from mothers smoking > or = 10 cigarettes a day) entered the study. MAIN OUTCOME MEASURES: Difference in weight gain between children born to smoking mothers and those born to non-smoking mothers. Weight was measured at birth and at 3 and 6 months of age. Maternal smoking habit was derived from interview on third or fourth day after delivery. RESULTS: Compared with children born to mothers who did not smoke during pregnancy, the birth weights of children born to mothers who smoked up to nine cigarettes a day were 88 g (girls) and 107 g (boys) lower; in children born to mothers who smoked > or = 10 cigarettes a day weights were 168 g and 247 g lower. At six months of age for the first group the mean weight for girls was 9 g (95% confidence interval -47 g to 65 g) higher and for boys 64 g (-118 g to -10 g) lower than that of children born to mothers who did not smoke. The corresponding figures for the second group were 28 g (-141 g to 85 g) lower for girls and 24 g (-136 g to 88 g) lower for boys. CONCLUSIONS: The deficits of weight at birth in children born to mothers who smoked during pregnancy are overcome by 6 months of age. These deficits are probably not permanent when smoking habit during pregnancy is not associated with other unfavourable variables (such as lower socioeconomic class).
Authors: A De Scrilli; P Boracchi; G Pardi; G Bevilacqua; F M Pezzani; A Marconi; R Davanzo; R Paludetto; L Selvaggi; A A Zuppa Journal: Genus Date: 1986 Jan-Jun
Authors: I Cortinovis; P Boracchi; A De Scrilli; S Milani; C Bertulessi; G Zuliani; G Bevilacqua; C Corchia; R Davanzo; L Selvaggi Journal: Genus Date: 1986 Jan-Jun
Authors: P Boracchi; I Cortinovis; A De Scrilli; S Milani; C Bertulessi; A Marconi; G Pardi; G Zuliani; G Bevilacqua; R Davanzo Journal: Genus Date: 1986 Jan-Jun
Authors: P Nafstad; J J Jaakkola; J A Hagen; B S Pedersen; E Qvigstad; G Botten; J Kongerud Journal: J Epidemiol Community Health Date: 1997-06 Impact factor: 3.710
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