• M Marty, F Blotman, B Avouac, S Rozenberg, and J P Valat.
• Clinica et Statistica, Montrouge, France.
• Rev Rhum Engl Ed. 1998 Feb 1;65(2):126-34.

ObjectivesTo translate and to validate the metrological properties of the Dallas Pain Questionnaire, an instrument designed to evaluate the impact of low back pain on four aspects of patients' lives: daily activities, work and leisure activities, anxiety/depression and social interest.MethodsThe Dallas Pain Questionnaire, originally in English, was translated into French. The metrological properties of the French version were investigated in a cohort of 59 patients with chronic low back pain due to degenerative disk disease. Duration of the pain was between three and 24 months. Treatment consisted of nonsteroidal antiinflammatory drugs and/or analgesics, local corticosteroid injections and a plaster lumbar corset. Patients were evaluated at baseline, after ten days (under the same treatment), and at completion of the treatment.ResultsResults were reproducible for all four areas of the questionnaire (CCI > 0.75). Internal structural validity was satisfactory for the four areas (Cronbach alpha test = 0.89 to 0.91). At baseline, the pain score on a visual analog scale was significantly correlated with the Dallas scores for daily activities, anxiety/depression and social interest (external structural validity). The daily activities, work/leisure and anxiety/depression scores were sensitive to change (P < 0.001, P < 0.001, and P = 0.003, respectively), whereas the social interest score was not (P = 0.11).ConclusionThe French version of the Dallas Pain Questionnaire is valid, reproducible, and sensitive to change in chronic low back pain patients.

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