Multidimensional assessment of chronic low back pain: Predicting treatment outcomes

This study explored responses of chronic low back pain patients to treatment for different types of patients (''dysfunctional,'' ''interpersonally distressed,'' and ''minimizer/adaptive coper''), as classified using the Multidimensional Pain Inventory (MPI). In addition, changes in MPI scores during treatment were examined separately for each patient type. Finally, this study explored the relationships between changes in MPI scores and physical improvement. Between-group differences in improvement were significant, with ''dysfunctional'' patients showing the most improvement on several scales. MPI scales that best predicted physical improvement differed according to patient type. Implications for treatment of low back pain patients are suggested, based upon differential reactions to treatment and different predictors of physical improvement for each patient group.