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Posttraumatic stress disorder (PTSD) affects 3.6–9.7% of women, and has been associated with adverse outcomes in pregnancy; however, associations with prenatal care (PNC) utilization are not clear. To evaluate associations of PTSD in pregnancy with PNC utilization and adverse infant outcomes in an active-duty military population (a population with universal health insurance). This was a retrospective cohort study of pregnant active-duty service members in Department of Defense Birth and Infant Health Research program data from 2007 to 2014. Administrative medical encounter data were used to define PTSD cases and outcomes of interest. Descriptive statistics and multivariable log-binomial regression compared PNC utilization and adverse infant outcomes (preterm birth, small for gestational age [SGA], major birth defects) among service members with current PTSD (defined as PTSD in the year prior to pregnancy or during pregnancy) to those without current PTSD. Of the 103,221 singleton live births identified, 1657 (1.6%) were born to active-duty service members diagnosed with current PTSD. Service members with PTSD were more likely to initiate PNC in the first trimester (93.5% vs. 90.2%) and score adequate plus on the Adequacy of Prenatal Care Utilization Index (63.2% vs. 40.0%) compared to service members without PTSD. PTSD case status was not associated with preterm birth, SGA, or major birth defects, regardless of the adjustment set used (fully adjusted RR 0.96, 95% CI 0.82–1.13; RR 1.08, 95% CI 0.79–1.48; and RR 1.03, 95% CI 0.79–1.34, respectively). For pregnant service members with current PTSD, no associations with adverse infant outcomes were noted, and these patients initiated care earlier and had higher PNC utilization scores compared to pregnant service members without current PTSD. Universal health care coverage and utilization of PNC in this population may mitigate adverse pregnancy outcomes observed in civilian populations of patients with PTSD.

Pregnancy and posttraumatic stress disorder: associations with infant outcomes and prenatal care utilization