Patterns of Perinatal Psychiatric Illness and Healthcare Burden: A Temporally-based Phenotype Analysis.

Perinatal psychiatric illness (PPI) is the most common morbidity in pregnancy and is associated with substantial maternal and healthcare burden. Variability in timing and course of PPI remains poorly characterized in the context of its association with differential hospital service utilization. To classify perinatal psychiatric illness into by onset of timing and duration of symptoms and systematically investigate differences in hospital service utilization. This cross-sectional study analyzed 20,015 women who received perinatal care and subsequently delivered at one of eight hospitals in a la