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 …

This study was undertaken to determine 1) whether reducing tobacco exposure during
pregnancy increases the birth weight of term infants and 2) the relative effects of early-and …

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

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

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 …

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

Cigarette smoking during pregnancy is an important, avoidable factor associated with low
birth weight. Maternal age is also associated with variations in birth weight. Using birth …

The authors evaluated the effect of maternal environmental tobacco smoke (ETS) exposure
during pregnancy and prenatal maternal smoking on child's height at age 5 years, using …

Maternal smoking rates in pregnancy have declined, particularly in the non‐manual social
classes, and perinatal mortality rates have fallen over the last 20 years. We have therefore re …

Objective To compare the estimated effect on birth weight of reductions in maternal cigarette
consumption and urinary cotinine during pregnancy. Study design An observational study of …