Abstract
Objective: to chart the use of alcohol and tobacco during pregnancy. Design: prospective study. Setting: outpatient clinic at a major hospital in Oslo at the time of 17th week ultrasound examination and the maternity ward at the time of delivery. Subjects: representative sample of pregnant women in the Oslo area. Main outcome measures: interview at 17th week of pregnancy, questionnaire at time of birth, biological markers for tobacco and alcohol. Results: Alcohol consumption decreased significantly, mainly among women with low levels of consumption. Use of tobacco showed a relatively stable tendency during pregnancy.
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