Racial Disparities in Context: A Multilevel Analysis of Neighborhood Variations in Poverty and Excess Mortality Among Black Populations in Massachusetts
S.V. Subramanian, PhD,
Jarvis T. Chen, ScD,
David H. Rehkopf, MPH,
Pamela D. Waterman, MPH and
Nancy Krieger, PhD
The authors are with the Department of Society, Human Development and Health, Harvard School of Public Health, Boston, Mass.
Correspondence: Requests for reprints should be sent to S. V. Subramanian, PhD, Department of Society, Human Development and Health, Harvard School of Public Health, 677 Huntington Ave, Kresge 7th Floor, Boston MA 02115-6096 (e-mail: svsubram{at}hsph.harvard.edu).
Objectives. We analyzed neighborhood heterogeneity in associationsamong mortality, race/ethnicity, and area poverty.
Methods. We performed a multilevel statistical analysis of Massachusettsall-cause mortality data for the period 1989 through 1991 (n=142836deaths), modeled as 79813 cells (deaths and denominators cross-tabulatedby age, gender, and race/ethnicity) at level 1 nested within5532 block groups at level 2 within 1307 census tracts (CTs)at level 3. We also characterized CTs by percentage of the populationliving below poverty level.
Results. Neighborhood variation in mortality across CTs andblock groups was not accounted for by these areas age,gender, and racial/ethnic composition. Neighborhood variationin mortality was much greater for the Black population thanfor the White population, largely because of CT-level variationin poverty rates.
Conclusions. Neighborhood heterogeneity in the relationshipbetween mortality and race/ethnicity in Massachusetts is statisticallysignificant and is closely related to CT-level variation inpoverty.
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