MMPI changes following behavioral treatment of chronic low back pain.

A large sample of patients with chronic low back pain were studied on admission to a behaviorally oriented in-patient pain program, at program completion, and at 1 month follow-up. Cluster analysis of admissions MMPI scores were used to identify 4 patient subgroups each for males and females. There were no subgroup differences found on any of the admissions demographic, pain report, or physical function measures, or differential treatment outcome based on subgroup.

Treating chronic low back pain. II. Long-term follow-up.

Appraisal of chronic low back pain (CLBP) treatment outcome is incomplete unless results can be shown to be stable over an extended follow-up period. This paper concentrates on methods by which the long-term trends of objective outcome assessments can be studied and predictions developed given incomplete data. Employment and litigation status, self-rating of pain, activities, medications, and hospitalizations related to pain were periodically assessed in up to 210 graduates of a CLBP treatment program, over a period of 6 months to 5 years following treatment.

Treating chronic low back pain. I. Admissions to initial follow-up.

For a normative study of chronic low back pain (CLBP), 702 consecutive admissions to a large multidisciplinary CLBP treatment program were assessed at admission, discharge, and 1-month follow-up, using a variety of psychological and functional performance instruments. Both univariate and multivariate approaches to appraising success are evaluated. Psychological profiles demonstrated a substantial degree of disability at admissions, which is significantly reduced at follow-up.