Racial and ethnic disparities in birth outcomes and labour and delivery-related charges among women with intellectual and developmental disabilities

Women with intellectual and developmental disabilities (IDD) in the USA are bearing children at increasing rates. However, very little is known whether racial and ethnic disparities in birth outcomes and labour and delivery-related charges exist in this population. This study investigated racial and ethnic disparities in birth outcomes and labour and delivery-related charges among women with IDD.

The study employed secondary analysis of the 2004-2011 Healthcare Cost and Utilization Project National Inpatient Sample, the largest all-payer, publicly available US inpatient healthcare database. Hierarchical mixed-effect logistic and linear regression models were used to compare the study outcomes.

We identified 2110 delivery-associated hospitalisations among women with IDD including 1275 among non-Hispanic White women, 527 among non-Hispanic Black women and 308 among Hispanic women. We found significant disparities in stillbirth among non-Hispanic Black and Hispanic women with IDD compared with their non-Hispanic White peers [odds ratio = 2.50, 95% confidence interval (CI): 1.16-5.28, P < 0.01 and odds ratio = 2.53, 95% CI: 1.08-5.92, P < 0.01, respectively]. There were no racial and ethnic disparities in caesarean delivery, preterm birth and small-for-gestational-age neonates among women with IDD. The average labour and delivery-related charges for non-Hispanic Black and Hispanic Women with IDD ($18 889 and $22 481, respectively) exceeded those for non-Hispanic White women with IDD ($14 886) by $4003 and $7595 or by 27% and 51%, respectively. The significant racial and ethnic differences in charges persisted even after controlling for a range of individual-level and institutional-level characteristics and were 6% (ln(β) = 0.06, 95% CI: 0.01-0.11, P < 0.05) and 9% (ln(β) = 0.09, 95% CI: 0.03-0.14, P < 0.01) higher for non-Hispanic Black and Hispanic Women with IDD compared with non-Hispanic White women with IDD.

Our findings highlight the need for an integrated approach to the delivery of comprehensive perinatal services for racial and ethnic minority women with IDD to reduce their risk of having a stillbirth. Additionally, further research is needed to examine the causes of racial and ethnic disparities in hospital charges for labour and delivery admission among women with IDD and ascertain whether price discrimination exists based on patients' racial or ethnic identities.