Journal
ANNALS OF EPIDEMIOLOGY
Volume 13, Issue 5, Pages 377-384Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/S1047-2797(02)00480-5
Keywords
residence characteristics/statistics and numerical data; socioeconomic factors; epidemiologic methods; labor; premature/epidemiology; logistic models
Categories
Funding
- NICHD NIH HHS [HD28684] Funding Source: Medline
- NIDA NIH HHS [DA09096] Funding Source: Medline
- ODCDC CDC HHS [U64/CCU412273] Funding Source: Medline
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PURPOSE: We demonstrate modeling of community-level socioeconomic influences on risk of preterm birth (< 37 weeks gestation) in the Pregnancy, Infection, and Nutrition (PIN) Study. METHODS: Community-level information from the US Census was linked to 930 White and 817 African-American (Black) participants from a prospective cohort in central North Carolina through geocoded addresses, providing 123 census tracts with community-level and individual-level data for multi-level statistical analyses. RESULTS: Preterm delivery was experienced by 12.1% of Black and 10.4% of White participants. No appreciable aggregation of risk by community was discernable for White women. For Black women, random-coefficient logistic regression tract-specific preterm prevalence estimates ranged from 10.1% to 14.5%, shrunk from observed prevalences of 0% to. 100%. Adding tract-level variables to the model representing median splits for household income and percent of single women heads of households with dependents, adjusting for individual-level maternal age and household income, accounted for much of the remaining between-tracts variation. CONCLUSIONS: Residing in a wealthier tract (> $30,000/year median income) was associated with reduced risk for Black women, adjusted OR = 0.59 (95% CI: 0.36, 0.96). The estimated conditional effect of lower community prevalence of female headed households was OR = 0.71 (95% Cl: 0.43, 1.17). (C) 2003 Elsevier Inc. All rights reserved.
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