The Common Alcohol Logistic-Revised scale (CAL-R): a revised alcoholism scale for the MMPI and MMPI-2

The Common Alcohol Logistic-Revised (CAL-R) scale was developed for use with MMPI or MMPI-2 with medical patients. It was derived from the Common Alcohol Logistic (CAL) scale and developed by (1) dropping the six CAL items deleted from the MMPI during construction of the MMPI-2 and recomputing item weights (using logistic regression); (2) calculating norms; and (3) repeating the validation procedure used in developing CAL. We used the same criterion group (1,221 alcoholics) and same contrast sample (7,621 nonalcoholic medical patients) used for CAL. Comparison of receiver operating characteristic curves, positive predictive value, and negative predictive value for CAL and CAL-R indicates that the latter has the same favorable ability to screen medical patients for alcoholism as the former.