Assessing Outcome-to-Outcome Interference in Sibling Fixed Effects Models

Mallinson, David C.

doi:10.48550/arxiv.2109.13399

Cited by 1 publication

(2 citation statements)

References 23 publications

(48 reference statements)

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“…Lastly, we assessed outcome-to-outcome spillover with a simple placebo test: a gain-score regression that adjusts for both PNCC exposure variables and an observed, preexposure, family-level characteristic that is associated with PNCC exposure. 38 If the partial regression coefficient for the observed characteristic is zero, then outcome-to-outcome spillover is absent. Conversely, a non-zero partial regression coefficient is consistent with outcome-to-outcome spillover or sibling-varying confounding, both of which bias the youngerto-older spillover estimate.…”

Section: Additional Variablesmentioning

confidence: 99%

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Spillover Effects of Prenatal Care Coordination on Older Siblings Beyond the Mother-Infant Dyad

Mallinson¹,

Ehrenthal

2023

Medical Care

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Background: Pregnancy care coordination increases preventive care receipt for mothers and infants. Whether such services affect other family members’ health care is unknown. Objective: To estimate the spillover effect of maternal exposure to Wisconsin Medicaid’s Prenatal Care Coordination (PNCC) program during pregnancy with a younger sibling on the preventive care receipt for an older child. Research Design: Gain-score regressions—a sibling fixed effects strategy—estimated spillover effects while controlling for unobserved family-level confounders. Subjects: Data came from a longitudinal cohort of linked Wisconsin birth records and Medicaid claims. We sampled 21,332 sibling pairs (one older; one younger) who were born during 2008-2015, who were <4 years apart in age, and whose births were Medicaid-covered. In all, 4773 (22.4%) mothers received PNCC during pregnancy with the younger sibling. Measures: The exposure was maternal PNCC receipt during pregnancy with the younger sibling (none; any). The outcome was the older sibling’s number of preventive care visits or preventive care services in the younger sibling’s first year of life. Results: Overall, maternal exposure to PNCC during pregnancy with the younger sibling did not affect older siblings’ preventive care. However, among siblings who were 3 to <4 years apart in age, there was a positive spillover on the older sibling’s receipt of care by 0.26 visits (95% CI: 0.11, 0.40 visits) and by 0.34 services (95% CI: 0.12, 0.55 services). Conclusion: PNCC may only have spillover effects on siblings’ preventive care in selected subpopulations but not in the broader population of Wisconsin families.

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Section: Additional Variablesmentioning

confidence: 99%

“…33 See Mallinson (2021) for details. 38 We used Stata Statistical Software, Release 16, for analyses. 39 The University of Wisconsin School of Medicine and Public Health Institutional Review Board approved this project.…”

Section: Additional Variablesmentioning

confidence: 99%