Background: Although not routinely assessed, prenatal posttraumatic stress disorder (PTSD) is associated with poor maternal mental health and mother-infant bonding. Prenatal PTSD may also be associated with birth weight and gestational age outcomes, but this remains unclear. This systematic review and meta-analysis investigated the association of prenatal PTSD with risk of low birth weight (LBW) or preterm birth (PTB) (dichotomous medically-defined cut-offs) or with birth weight (BW) or gestational age (GA) (continuous variables).
Methods: A comprehensive literature search was conducted in Web of Science, MedLine, PubMed, and PsychInfo. Data were collected and processed according to Meta-analysis of Observational Studies in Epidemiology (MOOSE) guidelines. Study quality was assessed with the Newcastle-Ottowa Quality Assessment Scale. Pooled effect sizes were estimated with random-effects models (correlation for continuous and odds ratios for dichotomous outcomes).
Results: Sixteen studies with 51,470 participants (prenatal PTSD 8%) were included in 4 meta-analyses. Maternal prenatal PTSD was associated with higher risks of LBW (OR = 1.96; 95% CI, 1.26, 3.03; P = .003), PTB (OR = 1.42; 95% CI, 1.16, 1.73; P = .001), and reduced GA (r = -0.04; 95% CI, -0.06, -0.01; P = .002).
Limitations: Different designs across studies, variety of PTSD assessment practices, and a small pool of studies were noted.
Conclusions: Findings suggest prenatal PTSD presents increased risks of LBW, PTB, and reduced GA. Evidence of physical harm to neonates from prenatal PTSD provides a powerful rationale to increase prenatal PTSD screening and identify effective prenatal interventions to improve maternal and child outcomes.
Keywords: Birth weight; Gestational age; PTSD; Posttraumatic stress disorder; Prenatal; Preterm.
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