MMPI short forms as predictors of response to conservative treatment for low back pain.

This study (N = 115) compared the abilities of the Faschingbauer Abbreviated Minnesota Multiphasic Personality Inventory (FAM), the Midi-Mult, and the standard MMPI to predict response to conservative medical treatment for low back pain, as assessed by patient ratings of pain intensity 6 to 12 months later. The results indicated that all three inventory formats yielded significant correlations between the Hypochondriasis, Depression, and Hysteria scales and follow-up pain ratings. Less consistent findings were obtained with other scales and indices. The results provide tentative support for the clinical and research utility of these abbreviated MMPIs in substituting for the standard MMPI in outcome studies with back pain patients.