ZIP Code Matters: An Ecological Study of Preterm Birth in Rochester, New York
ACOG ePoster. Toscano M. Apr 27, 2018; 211636; 28I
Dr. Marika Toscano
Dr. Marika Toscano
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Introduction: Preterm birth (PTB) is not homogeneously distributed among populations. Risk factors can accumulate in discrete locations. We sought to investigate the geographical relationships between PTB and sociodemographic factors as denoted by ZIP code.

Methods: We conducted an ecological analysis of data from 2012 to 2014 in each Rochester ZIP code using vital statistics, hospital records and the American Community Survey. Pearson correlation coefficients (r) assessed the relationship between PTB rates and sociodemographic variables by ZIP code. Geographic information system (GIS) mapping explored the spatial relationships of PTB rates.

Results: 17,876 deliveries occurred with a PTB rate of 11.3%. The PTB rate ranged from 6.8% to 15.6% across 22 ZIP codes. GIS mapping demonstrated clustering of ZIP codes with the highest PTB rates in the urban center which overlapped with high levels of poverty and crime. Increased PTB rates significantly correlated with ZIP codes containing the largest percentage of minorities (r=0.836, P
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