The Quebec Back Pain Disability Scale

作者：Jacek A. Kopec, John M. Esdaile, Michał Abrahamowicz, Lucien Abenhaim, Sharon Wood-Dauphinée, Donna L. Lamping, Jack Ivan Williams · 发表于：Spine · 年份：1995 · DOI：10.1097/00007632-199502000-00016 · 被引用次数：667 · 研究领域：Musculoskeletal pain and rehabilitation、Spine and Intervertebral Disc Pathology、Cerebral Palsy and Movement Disorders

STUDY DESIGN: The Quebec Back Pain Disability Scale is a 20-item self-administered instrument designed to assess the level of functional disability in individuals with back pain. The scale was administered as part of a larger questionnaire to a group of 242 back pain patients. Follow-up data were obtained after several days and after 2 to 6 months. OBJECTIVES: The goal of this study was to determine whether the Quebec scale is a reliable, valid, and responsive measure of disability in back pain, and to compare it with other disability scales. SUMMARY OF BACKGROUND DATA: A number of functional disability scales for back pain are being used, but their conceptual validity is uncertain. Unlike most published instruments, the Quebec scale was constructed using a conceptual approach to disability assessment and empirical methods of item development, analysis, and selection. METHODS: The authors calculated test-retest and internal consistency coefficients, evaluated construct validity of the scale, and tested its responsiveness against a global index of change. Direct comparisons with the Roland, Oswestry, and SF-36 scales were carried out. RESULTS: Test-retest reliability was 0.92, and Cronbach's alpha coefficient was 0.96. The scale correlated as expected with other measures of disability, pain, medical history, and utilization variables, work-related variables, and socio-demographic characteristics. Significant changes in disability over time, and differences in change scores bet...