Association between obsessive–compulsive disorder and obstetrical and neonatal outcomes in the USA: a population-based cohort study

Obsessive–compulsive disorder (OCD) is a mental disorder linked to functional impairments and adverse health outcomes. We sought to examine the association between pregnant women with OCD and obstetrical and neonatal outcomes in the USA. A retrospective population-based cohort study was conducted using data provided by pregnant women from the Nationwide Inpatient Sample, a nationally representative database of hospitalizations in the USA, from 1999 to 2015. Using diagnostic and procedure codes from the International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM), we identified births and classified women by OCD status. Demographic and clinical characteristics were compared for women with and without OCD and multivariate logistic regressions were used to obtain odds ratios (OR) to compare obstetrical and neonatal outcomes between the two groups, adjusting for relevant demographic and clinical variables. Between 1999 and 2015, there were 3365 births to women with OCD, corresponding to an overall prevalence of 24.40 per 100,000 births. Women with OCD were more likely to be older than 25, Caucasian, of higher socioeconomic status, smokers or used drugs and alcohol, and have other comorbid psychiatric conditions. In adjusted models, OCD was associated with a higher risk of gestational hypertension, preeclampsia, premature rupture of membranes, caesarean and instrumental deliveries, venous thromboembolisms and preterm birth. Pregnancies in women with OCD are at high risk of adverse obstetrical and neonatal outcomes. A multidisciplinary approach should be used to identify high risk behaviours and ensure adequate prenatal follow-up and care be available for those with high risk pregnancies.