The Association between Having a Preterm Birth and Later Maternal Mental Health: An Analysis of U.S. Pregnancy Risk Assessment Monitoring System Data.

Abstract

Although previous studies have found a relationship between having a preterm birth and maternal depression, methodologic issues may have limited the generalizability of results. Thus, the purpose of this study was to evaluate the relationship between having a preterm birth and postpartum depressive symptoms using a large, population-based sample of U.S. women. This secondary data analysis used 2012-2014 U.S. Pregnancy Risk Assessment Monitoring System data (N=89,366). Data on the exposure, preterm birth, were obtained from birth certificates. Infants born at 32 to less than 37weeks' gestation were considered moderate to late preterm, infants born at 28 to less than 32 full weeks' gestation were considered very preterm, and infant born at less than 28 full weeks' gestation were considered extremely preterm. To assess the outcome, two Pregnancy Risk Assessment Monitoring System questions measuring postpartum depressive symptoms were used. Logistic regression was used to calculate unadjusted and adjusted odds ratios (ORs) and 95% confidence interval (CIs). After adjustment for confounders, the relationship between having a preterm birth and maternal hopelessness was statistically significant for those who had very preterm and extremely preterm births (moderate to late preterm OR, 1.19; 95% CI, 1.00-1.42; very preterm OR, 1.28; 95% CI, 1.04-1.58; extremely preterm OR, 1.81; 95% CI, 1.31-2.49). In addition, after adjustment, findings indicated no association between preterm birth and maternal loss of interest (extremely preterm OR, 0.85 95% CI, 0.60-1.19; very preterm OR, 1.04; 95% CI, 0.86-1.26; preterm OR, 0.95; 95% CI, 0.82-1.10). Given the statistically significant increased association between having a preterm birth and postpartum depressive symptoms, health professionals may consider implementing comprehensive screening for depression and other mental illnesses among women who give birth prematurely. Findings may also inform future interventions to emphasize the importance of postpartum care among women who have experienced preterm birth.