Objective: A retrospective cohort study was performed to evaluate whether birthweight was less among infants of women taking amphetamine–dextroamphetamine during pregnancy at our academic institution. Method: We identified mother–infant pairs with documented exposure to amphetamine–dextroamphetamine in pregnancy from 2005 through 2015. Patients were matched 2:1 with unexposed controls. Charts were reviewed for known causes of intrauterine growth restriction. Analysis of birthweight used generalized estimating equation blocking on matching. Medical histories were analyzed with χ2 test or Fisher’s exact test. Results: We identified 53 exposed mother–infant pairs. The difference in mean birthweight of infants exposed to amphetamine–dextroamphetamine versus those not exposed was 26.9 g, which is not significant (95% confidence interval [CI] = [−141, 195 g]; p = .75). A significant difference was noted for exposed versus unexposed mothers for comorbid psychiatric illness and history of substance abuse (p < .001). Conclusion: With a limited sample size, our study suggests no significant difference in birthweight.
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