Abstract

Research questionDo women of racial minorities aged 40 years or older have similar reproductive and obstetric outcomes as white women undergoing IVF? DesignA retrospective cohort study conducted at a single academic university-affiliated centre. The study population included women aged 40 years or older undergoing their first IVF cycle with fresh cleavage-stage embryo transfer stratified by racial minority status: minority (black or Asian) versus white. Clinical intrauterine pregnancy and live birth rate were the primary outcomes. Preterm delivery (<37 weeks) and small for gestational age were the secondary outcomes. Odds ratios with 95% confidence intervals were estimated. P < 0.05 was considered to be statistically significant. ResultsA total of 2050 cycles in women over the age of 40 years were analysed, 561 (27.4%) of which were undertaken by minority women and 1489 (72.6%) by white women. Minority women were 30% less likely to achieve a pregnancy compared with their white (non-Hispanic) counterparts (adjusted OR 0.68, CI 0.54 to 0.87). Once pregnant, however, the odds of live birth were similar (adjusted OR 1.23, CI 0.91 to 1.67). Minority women were significantly more likely to have lower gestational ages at time of delivery (38.5 versus 39.2 weeks, P = 0.009) and were more likely to have extreme preterm birth delivery 24–28 weeks (5.5 versus 1.0%, P = 0.021). ConclusionMinority women of advanced reproductive age are less likely to achieve a pregnancy compared with white (non-Hispanic) women. Once pregnancy is achieved, however, live birth rates are similar albeit with minority women experiencing higher rates of preterm delivery.

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