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Maternal Smoking and Childhood Asthma
1999
American Journal of Epidemiology
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The role of maternal smoking as a causal factor for the incidence of childhood asthma is still not clearly established. It was investigated among 3-and 4-year-old-child incident cases confirmed by a 6-year follow-up (n = 294) and cases who no longer had symptoms after diagnosis (n =110). The study took place in Montreal, Canada, between 1988 and 1997. Persistent and transient cases were compared with their respective controls from the original case-control study of incidence. The odds ratio for
doi:10.1093/oxfordjournals.aje.a010042
pmid:10472953
fatcat:s4dacozuozcdfplkvf5gprfbme