The PARC project supported two activities. First, was an analysis of the psychometric data from MHAS. This analysis demonstrated that the MHAS battery is a valuable tool for measuring differences in cognitive functioning in Mexico. The data show clear, sharp increases with age in cognitive impairment of the magnitude that has been observed in other populations. The issue that remains unresolved is the choice of cut-points for a dichotomous classification into “impaired’ and “normal” groups. This problem is complicated by the presence of very sharp differentials in performance by education. We will resolve this issue using clinical data from the Department of Geriatrics at the Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán (INCMN) which administered the MHAS battery to a sample of patients. These data have been entered into the database and are ready for analysis. We will be analyzing the data in June when two researchers from INCMN visit Penn as part of a related project. A comparison of these data with other clinical data and with clinical diagnoses will provide a solid basis for setting cut-points.
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