Adverse Obstetric and Perinatal Outcomes in Subfertile Women Conceiving Without Assisted Reproductive Technologies

Objective To determine whether adverse perinatal outcomes are increased in subfertile women. Design Cohort study. Setting Two tertiary assisted reproductive technologies (ART) centers; Victorian births register. Patient(s) Records of women who registered with the clinics (1991–2000), but did not have an infant using ART, were linked to the birth register (1991–2004) to identify singleton non-ART births within 5 years of registration (N = 2171). Controls, matched by maternal age and year of infant's birth, were selected randomly from birth records (N = 4363). Interventions None. Main Outcome Measure(s) Adverse obstetric and perinatal outcomes. Result(s) After adjusting for confounders, compared with controls, subfertile women had increased odds of hypertension or preeclampsia (adjusted odds ratio [OR] 1.29, 1.02–1.61), antepartum hemorrhage (adjusted OR 1.41, 1.05–1.89), perinatal death (adjusted OR 2.19, 1.10–4.36), low birth weight (adjusted OR 1.44, 1.11–1.85), preterm birth Conclusion(s) Subfertile women with singleton births are at increased risk of several adverse outcomes. These risks should be considered during their antenatal care and when analyzing adverse effects of ART.