The overall incidences of pregnancy complications in this population are shown in Table 2. Multivariate analysis was then performed to calculate adjusted odds ratios for these adverse outcomes. The obstetric outcomes for patients undergoing ovulation induction and those using IVF are compared in Table 3 to patients who did not use ART. Patients who underwent ovulation induction were 2.4 times more likely to have a placental abruption (95% CI 1.3–4.2) and 2.1 times more likely to have a fetal loss after 24 weeks (95% CI 1.3–3.6) compared with controls. A significant association between the use of IVF and several adverse pregnancy outcomes was also noted. Patients using IVF were 2.7 times more likely to develop preeclampsia (95% CI 1.7–4.4), 2.4 times more likely to have a placental abruption (95% CI 1.1–5.2), 6.0 times more likely to have a placenta previa (95% CI 3.4–10.7), and 2.3 times more likely to undergo a cesarean delivery (95% CI 1.8–2.9) compared with controls. We did not observe an increase in the incidence of aneuploidy or congenital anomalies in patients undergoing IVF.