Ethnic density and preterm birth in African-, Caribbean-, and US-born non-Hispanic black populations in New York City.
Segregation studies suggest that the health of blacks in the United States is poorer in majority-black compared with mixed-race neighborhoods. However, segregation studies have not examined black immigrants, who may benefit from social support and country-of-origin foods in black immigrant areas. The authors used 1995-2003 New York City birth records and a spatial measure of ethnic density to conduct a cross-sectional investigation of the risks of preterm birth for African-, Caribbean-, and US-born non-Hispanic black women associated with neighborhood-level African-, Caribbean-, and US-born non-Hispanic black density, respectively. Preterm birth risk differences were computed from logistic model coefficients, comparing neighborhoods in the 90th percentile of ethnic density with those in the 10th percentile. African black preterm birth risks increased with African density, especially in more deprived neighborhoods, where the risk difference was 6.1 per 1,000 (95% confidence interval: 1.9, 10.2). There was little evidence of an ethnic density effect among non-Hispanic black Caribbeans. Among US-born non-Hispanic blacks, an increase in preterm birth risk associated with US-born black density was observed in more deprived neighborhoods only (risk difference = 12.5, 95% confidence interval: 6.6, 18.4). Ethnic density seems to be more strongly associated with preterm birth for US-born non-Hispanic blacks than for non-Hispanic black immigrants.
Mason
Susan M
SM
Department of Epidemiology, University of North Carolina, Chapel Hill, North Carolina, USA. smason4@bics.bwh.harvard.edu
Kaufman
Jay S
JS
Emch
Michael E
ME
Hogan
Vijaya K
VK
Savitz
David A
DA
D000328:Adult; D001741:Black or African American; D001719:Birth Certificates; D044383:Black People / Q000208:ethnology; D017691:Caribbean Region / Q000208:ethnology; D005260:Female; D006801:Humans; D015994:Incidence; D007231:Infant, Newborn; D009519:New York City / Q000453:epidemiology; D047928:Premature Birth / Q000208:ethnology*; D012111:Residence Characteristics / Q000706:statistics & numerical data*; D012189:Retrospective Studies; D014505:Urban Population / Q000706:statistics & numerical data*; D055815:Young Adult
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