Thyroid Cancer Incidence in Highly Observant Jewish Neighborhoods in Metropolitan New York City
2011
Background: Thyroid cancer incidence in New York State has increased rapidly in recent years, particularly in New York City and its surrounding metropolitan area. In 2007 among white non-Hispanics, incidence rates were about 40% higher in the New York City metropolitan area than in the rest of the state. Here we explore the extent to which living in neighborhoods with a high percentage of highly observant Jews may be associated with this pattern. Methods: We identify neighborhoods with concentrations of highly observant Jewish persons based on the use of Yiddish among children and the location of Orthodox synagogues. Thyroid cancer risk is modeled as a function of living in such a neighborhood, adjusting for age, sex, and other factors. The model was repeated for small (<2 cm) and large (≥2 cm) tumors to assess the role of diagnostic improvements in driving the spatial-temporal patterns. Results: A moderate association with thyroid cancer was found among those living in Jewish neighborhoods and downstate ...
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