• Monika Mitra, Ilhom Akobirshoev, Anne Valentine, Kimberly McKee, and Michael M McKee.
• Lurie Institute for Disability Policy, Heller School for Social Policy and Management, Brandeis University, 415 South St. MS 035, Waltham, MA 02453, USA. Electronic address: mmitra@brandeis.edu.
• Prev Med. 2024 Mar 1; 180: 107883107883.

ObjectivePrior studies on severe maternal morbidity (SMM) have often excluded women who are deaf or hard of hearing (DHH), even though they are at increased risk of pregnancy complications and adverse birth outcomes. This study compared rates of SMM during delivery and postpartum among DHH and non-DHH women.MethodsThis nationally representative retrospective cohort study used hospital discharge data from the 2004-2020 Health Care and Cost Utilization Project Nationwide Inpatient Sample. The risk of SMM with and without blood transfusion during delivery and postpartum among DHH and non-DHH women were compared using modified Poisson regression analysis. The study was conducted in the United States in 2022-2023.ResultsThe cohort included 9351 births to DHH women for the study period, and 13,574,382 age-matched and delivery year-matched births to non-DHH women in a 1:3 case-control ratio. The main outcomes were SMM and non-transfusion SMM during delivery and postpartum. Relative risks were sequentially adjusted for sociodemographic characteristics, hospital-level characteristics, and clinical characteristics. In unadjusted analyses, DHH women were at 80% higher risk for SMM (RR = 1.81, 95% CI 1.63-2.02, p < 0.001) during delivery and postpartum compared to non-DHH women. Adjustment for socio-demographic and hospital characteristics attenuated risk for SMM (RR = 1.54, 95% CI 1.38-1.72, p < 0.001). Adjustment for the Elixhauser comorbidity score further attenuated the risk of SMM among DHH women (RR = 1.13, 95% CI 1.01-1.26, p < 0.05).ConclusionThe findings of this study demonstrate a critical need for inclusive preconception, prenatal, and postpartum care that address conditions that increase the risk for SMM among DHH people.Copyright © 2024. Published by Elsevier Inc.

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