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  • Title: Cross-Cultural Adaptation, Validity, and Reliability Study of the Turkish Version of Back Performance Scale.
    Author: Maras G, Citaker S, Meray J.
    Journal: Spine (Phila Pa 1976); 2019 Jan 01; 44(1):E39-E44. PubMed ID: 29979360.
    Abstract:
    STUDY DESIGN: Validation of a performance scale. OBJECTIVE: The purpose of this study is to investigate adaptation, validity, and reliability of the Turkish version of the Back Performance Scale (BPS). SUMMARY OF BACKGROUND DATA: Low back pain affects people of all ages and causes pain, disability, and psychosocial problems. BPS is a condition-specific performance measure of activity limitation in patients with low back pain. The purpose of this study is to investigate the cross-cultural adaptation, validity, and reliability of the Turkish version of the BPS. METHODS: The study included 180 patients with low back pain. For the reliability assessment of the scale, test-retest, and internal consistency analyses were performed. The results of the test-retest analysis were analyzed by Intraclass Correlation Coefficient (ICC) method. For the internal consistency, Cronbach Alpha value was calculated and to construct validity, total points of the BPS were compared with the total points of Roland Morris Disability Questionnaire (RMDQ) and Oswestry Disability Index (ODI) using Pearson correlation coefficient analysis. RESULTS: BPS was found to have high internal consistency (Cronbach alpha value 0.827). Test-retest results were found highly correlated (range from 0.723 to 0.899). Factor analysis indicated that the scale had one factor. BPS is well correlated with RMDQ and ODI (Pearson correlation coefficient with RMDQ 0.576 and with ODI 0.603). CONCLUSION: The Turkish version of BPS is valid and reliable. LEVEL OF EVIDENCE: 3.
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