Maternal and grandmaternal smoking patterns are associated with early childhood asthma

YF Li, B Langholz, MT Salam, FD Gilliland - chest, 2005 - Elsevier
Objective To investigate the associations of maternal and grandmaternal smoking before,
during, and after pregnancy with childhood asthma Design, setting, and participants We
conducted a case-control study nested within the Children's Health Study in southern
California. The case patients consisted of 338 children with asthma that had been
diagnosed in the first 5 years of life, and 570 control subjects were countermatched on in
utero exposure to maternal smoking within grade, sex, and community of residence …