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Pregnant women from three Kaiser Permanente obstetrics and gynecology clinics in Northern California (1981-1982) were analyzed for use of video display terminals (VDTs) and adverse pregnancy outcomes. The authors report a significantly elevated risk of miscarriage for women that used VDTs > 20 hours per week during the first trimester (OR1.8; 95% CI 1.2-2.8) that was not explained by age, education, occupation, smoking, alcohol consumption, or other maternal characteristics. |