Amid persistent gaps in maternity care quality across the developing world, a deceptively simple intervention — having a trained or informal companion present throughout labor — emerges as one of the most cost-effective tools available to reduce preventable harm during childbirth. The stakes are high: maternal and neonatal mortality in low- and middle-income countries (LMICs) remains stubbornly elevated compared to wealthier nations, with psychosocial stress and disrespectful care compounding physiological risk.
This narrative review, published in BMC Pregnancy and Childbirth, synthesized evidence from 27 studies — including 8 primary LMIC studies, 6 high-income country studies focused on marginalized populations, and 13 systematic reviews — spanning 2015 to 2025. Across settings, continuous intrapartum support from birth companions or doulas was consistently associated with shorter labor duration, higher rates of spontaneous vaginal delivery, and reduced likelihood of cesarean section. Psychosocial outcomes were also notable: women receiving companion support reported lower anxiety, greater satisfaction with care, and improved early postpartum wellbeing. Neonatal indicators, including Apgar scores, trended favorably as well, though effect sizes varied by companion type and healthcare context.
The broader significance here lies in mechanism and scalability. Unlike pharmacological or surgical interventions, continuous labor support appears to modulate the stress-cortisol axis during labor, potentially reducing dysfunctional uterine contractions linked to fear and isolation — a pathway with meaningful biological plausibility. The Cochrane literature on this topic in high-income countries has been robust for over a decade; what this review contributes is a sharper lens on LMIC applicability, where baseline care deficits are greater and the marginal benefit of support may therefore be larger.
Key limitations deserve acknowledgment. The review is narrative rather than meta-analytic, meaning pooled effect sizes are unavailable. Heterogeneity across the 27 included studies in design, companion training level, and outcome measurement makes direct comparison difficult. Just 8 primary studies were conducted in LMICs themselves. Still, the convergent direction of evidence — across companion types and settings — lends credibility to the signal. For health systems with constrained resources, trained lay companions represent a potentially high-return investment in perinatal outcomes.