No abstract

A comparative population study on SLE from 1956-1 965 revealed higher attack rates in New York City than in Jefferson County, Ala. The difference was attributed to more complete case-finding in New York rather than to regional differences in predisposing factors. In both localities, incidence, prevalence and mortality rates were approximately three times higher for Negro females than for whites. In males, however, few cases were observed, and ethnic differences were considered equivocal.This report describes the results of a comparative epidemiologic study on systemic lupus erythematosus (SLE) in New York City and Jefferson County, Ala, from 1956Ala, from -1965. The data obtained relate to incidence, prevalence and mortality trends, and to ethnic and geographic factors in the