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Key PointsQuestionIs prepregnancy body mass index (BMI) associated with severe maternal morbidity? FindingsIn this cohort study that included 743 630 pregnant women in Washington State between 2004 and 2013, low and high prepregnancy BMI, compared with normal BMI, were significantly associated with increased risk of a composite adverse outcome of severe maternal morbidity or mortality that included maternal death and conditions leading to serious sequelae (eg, adjusted absolute risk increase of 28.8 per 10 000 for underweight and 61.1 per 10 000 for class 3 obese women). MeaningLow and high prepregnancy BMI were associated with a statistically significant but small increase in the risk of severe maternal morbidity or mortality.
JAMA – American Medical Association
Published: Nov 14, 2017
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