Emotional disturbance and chronic low back pain

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Abstract
Treated chronic low back pain patients (N = 102) in a university hospital clinic. Ss were given the EPI, the MMPI, the Recent Life Changes Questionnaire, and the Locus of Control Scale in order to isolate the principal dimensions of emotional disturbance in such patients and to see whether derived dimensions were related to response to conservative treatment for back pain. Self-report ratings of current pain intensity were obtained approximately 1 year after the start of treatment. Factor analysis revealed five factors: Distrust and alienation, somatic concern, vulnerability, extraversion, and social desirability; these accounted for 71% of the total variance among patients. Patients with above-average pretreatment distrust and alienation scores more frequently failed to return the follow-up form than patients with below-average scores. Low scores on somatic concern were related to good outcome. Results suggest that patients high in alienation and distrust may be prone to be poor compliers. Because only the somatic concern dimension predicted outcome, a single scale that measures this characteristic may be sufficient for effective identification of the potential good vs. poor responders to conservative treatment of low back pain.