RE: "EVALUATION OF MORTALITY DATA FOR OLDER MEXICAN AMERICANS: IMPLICATIONS FOR THE HISPANIC PARADOX"

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Abstract
In a paper appearing several months ago in the Journal (1), we compared mortality ascertainment carried out using the National Death Index (NDI) with mortality ascertainment conducted through fieldwork for the Hispanic segment of the Established Populations for Epidemiologic Studies of the Elderly (H-EPESE). The H-EPESE follows a cohort of older Mexican Americans residing in five southwestern US states who were selected in 1993–1994. Because, in the H-EPESE fieldwork, the informant used when a subject could not be located was usually a relative of the subject, we considered the collected information to be correct, and we compared it with information from the NDI under a scoring algorithm similar to that used to match National Health Interview Survey (NHIS) data with NDI data. We calculated 21 percent underascertainment for the NDI and 9 percent overascertainment, for a net underascertainment of 12 percent (table 1).

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