Status of racial disparities between black and white women undergoing assisted reproductive technology in the US

Numerous studies have demonstrated substantial differences in assisted reproductive technology outcomes between black non-Hispanic and white non-Hispanic women. We sought to determine if disparities in assisted reproductive technology outcomes between cycles from black non-Hispanic and white non-Hispanic women have changed and to identify factors that may have influenced change and determine racial differences in cumulative live birth rates.

This is a retrospective cohort study of the SARTCORS database outcomes for 2014-2016 compared with those previously reported in 2004-2006 and 1999/2000. Patient demographics, etiology of infertility, and cycle outcomes were compared between black non-hispanic and white non-hispanic patients. Categorical values were compared using Chi-squared testing. Continuous variables were compared using t-test. Multiple logistic regression was used to assess confounders.

We analyzed 122,721 autologous, fresh, non-donor embryo cycles from 2014 to 2016 of which 13,717 cycles from black and 109,004 cycles from white women. The proportion of cycles from black women increased from 6.5 to 8.4%. Cycles from black women were almost 3 times more likely to have tubal and/or uterine factor and body mass index ≥30 kg/m². Multivariate logistic regression demonstrated that black women had a lower live birth rate (OR 0.71;P < 0.001) and a lower cumulative live birth rate for their initial cycle (OR 0.64; P < 0.001) independent of age, parity, body mass index, etiology of infertility, ovarian reserve, cycle cancellation, past spontaneous abortions, use of intra-cytoplasmic sperm injection or number of embryos transferred. A lower proportion of cycles in black women were represented among non-mandated states (P < 0.001) and cycles in black women were associated with higher clinical live birth rates in mandated states (P = 0.006).

Disparities in assisted reproductive technology outcomes in the US have persisted for black women over the last 15 years. Limited access to state mandated insurance may be contributory. Race has continued to be an independent prognostic factor for live birth and cumulative live birth rate from assisted reproductive technology in the US.