Background Recent studies have found that cotinine is a better predictor of birthweight than
the number of cigarettes smoked in pregnancy. In this paper we test this hypothesis and use …

BACKGROUND: Most studies of the reproductive consequences of cigarette smoking base
exposure on self-reported smoking habits. This study examines the relationship of birth …

The concentration of serum cotinine (the major metabolite of nicotine) was measured in sera
from 4211 women at between 15 and 21 weeks gestation to determine whether a serum …

Objective: To compare the antenatal and postnatal cotinine levels in smoking women after
controlling for the differences in smoking practices. Study Design: A paired comparison of …

In this study the relationship between birth weight and passive exposure to tobacco smoke is
assessed for the first time by serum cotinine measurements. Among 1231 nonsmoking white …

To determine how maternal exposure to environmental tobacco smoke affects birthweight,
maternal sera obtained from 3529 pregnant women around 27 weeks gestation were …

Objective To measure quantitatively and objectively the maternal and fetal tobacco exposure
during pregnancy and its neonatal effects. Design Tobacco exposure was assessed from …

Although during pregnancy there is a better correlation between matermal serum cotinine
concentration and adverse outcome than between self-reported smoking and such an …

This study was undertaken to determine the relation between self-reported number of
cigarettes smoked per day and urine cotinine concentration during pregnancy and to …

Objective: To evaluate the distribution of cotinine in fetal fluids and serum during the first half
of pregnancy, and compare the fetal and maternal cotinine levels in passive and active …