Abstract
Research questionWhat implications does anorexia nervosa have on pregnancy outcomes in a US population? DesignA retrospective, population-based study using data from the Healthcare Cost and Utilization Project—Nationwide Inpatient Sample. A dataset of all deliveries between 2004 and 2014 inclusively was created. The population was divided into women with anorexia nervosa (n = 214) and women without anorexia nervosa (n = 9,096,574), and a cohort matched 1:4 with anorexia nervosa for age, race, medical insurance type and income quartile. Delivery and neonatal outcomes were compared between the two matched groups and with the control group of deliveries. A multivariable logistic regression analysis, controlling for statistically significant baseline characteristics, explored associations between anorexia nervosa and delivery, and neonatal outcomes. ResultsCompared with the entire group, women diagnosed with anorexia nervosa were more likely to be white, smokers, of higher income or diagnosed with another psychiatric disorder. In the unmatched comparison, women with anorexia nervosa had a higher frequency of preterm delivery (adjusted odds ratio [aOR] 2.98 CI 1.86 to 4.76, P < 0.001), placental abruption (aOR 3.41 CI 1.38 to 8.40, P = 0.008) and small for gestational age (SGA) neonates (aOR 5.32 CI 3.12 to 9.09, P < 0.001). In the matched comparison, preterm delivery (aOR 5.31, CI 3.02 to 9.32, P < 0.001) and SGA neonates were significantly higher in the anorexia nervosa group (aOR 4.69 CI 2.6 to 8.41, P < 0.001), providing results similar to the unmatched comparison. ConclusionHealthcare providers, specifically fertility specialists, should be aware of the magnitude of adverse outcomes related to pregnancy in women with anorexia nervosa.
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