centralized database, which required double entry for verification of accuracy. Given the large number of variables available from this dataset, we selected a parsimonious set of summary variables from each measure. Variables were selected using clinical judgment and expertise of the authors to represent primary variables from each measure. Prior to analysis, correlations among variables were tested and those with strong correlations (r > .6) were excluded. As a result, variables from 2 measures (CANTAB Choice Reaction Time and D-KEFS Design Fluency) were excluded from further analysis. The resulting dataset included 11 variables, which are listed in Table 1.
