Abstract
Background: Spina bifida (SB) is a relatively common birth defect with the highest prevalence among Hispanics. A randomized controlled trial (MOMS) demonstrated that prenatal repair yielded improved outcomes compared to postnatal repair. However, the social determinants of health can significantly impact the overall well-being of affected individuals or their eligibility for some of these evidenced-based interventions. Methods: We conducted a retrospective observational study to describe and compare the mean Child Opportunity Index (COIs) scores among patients treated at a free-standing children’s hospital who underwent either prenatal or postnatal repair of SB from January 1<sup>st</sup>, 2012, to December 31<sup>st</sup>, 2021. We excluded patients with identifiable maternal and fetal contraindications to prenatal repair, as per the MOMS trial eligibility, apart from those pertaining to socio-economic status. RESULTS: Among a total cohort of 51 fetuses, 86% (n = 44) underwent postnatal repair for SB, while 14% (n = 7) received prenatal repair. Patients who underwent prenatal repair exhibited lower COI scores across all domains (education, health, and environment, social and economic) on national, state, and metro levels compared to the postnatal group. Our cohort showed a higher percentage of primary commercial insurance in the prenatal (fetal) surgery group (57.14%) versus the postnatal surgery group (47.73%), without attaining statistical significance (p=0.25). Conclusion: While COI scores across all domains were lower in the prenatal cohort, our data does not suggest a statistically significant difference between prenatal and postnatal surgery groups. This highlights the need for future studies with larger sample sizes to further explore and define this relationship.
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