Very-low-birthweight infants and income incongruity among African American and white parents in Chicago.

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Abstract
OBJECTIVES: Illinois vital records for 1982/1983 and US census income data for 1980 were analyzed to ascertain the relationship of income incongruity, race, and very low birthweight. METHODS: Positive income incongruity was considered present when study infants resided in wealthier neighborhoods than non-Latino Whites at the same level of parental education attainment and marital status. RESULTS: The odds ratios of very low birthweight for African Americans (n = 44,266) and Whites (n = 27,139) who experienced positive income incongruity were 0.7 (95% confidence interval [CI] = 0.5, 0.9) and 0.6 (95% CI = 0.5, 0.9), respectively. CONCLUSIONS: Positive income incongruity is associated with lower race-specific rates of very low birthweight.