Development of the Marathi Version of the Quebec Back Pain Disability Scale: A Cross-Cultural Adaptation and Validation in Patients With Chronic Low Back Pain

Background:The Quebec Back Pain Disability Scale (QBPDS) is a more commonly used measure to assess the disability in low back pain (LBP) patients. It is important to administer patient-reported outcomes in the patient's native language to enhance successful outcomes.The objective of this study was to translate, culturally adapt, and validate QBPDS into Marathi language and establish psychometric properties in chronic LBP patients.A prospective, cross-sectional study was conducted in a tertiary health care center.Background:The Quebec Back Pain Disability Scale (QBPDS) is a more commonly used measure to assess the disability in low back pain (LBP) patients. It is important to administer patient-reported outcomes in the patient's native language to enhance successful outcomes.The objective of this study was to translate, culturally adapt, and validate QBPDS into Marathi language and establish psychometric properties in chronic LBP patients.A prospective, cross-sectional study was conducted in a tertiary health care center.Background:The Quebec Back Pain Disability Scale (QBPDS) is a more commonly used measure to assess the disability in low back pain (LBP) patients. It is important to administer patient-reported outcomes in the patient's native language to enhance successful outcomes.The objective of this study was to translate, culturally adapt, and validate QBPDS into Marathi language and establish psychometric properties in chronic LBP patients.A prospective, cross-sectional study was conducted in a tertiary health care center.Materials and Methods:The QBPDS was translated and culturally adapted into Marathi (QBPDS-M) following standardized guidelines. A total of 75 chronic low back patients participated in the study. The construct validity of QBPDS-M was evaluated using exploratory factor analysis. Convergent validity was assessed using the Pearson correlation analysis between the QBPDS-M and Roland-Morris Disability Questionnaire (RMDQ) and the Numeric Pain Rating Scale (NPRS). Internal consistency and test-retest reliability was computed using Cronbach's alpha and intra-class correlation coefficient (ICC), respectively.Results:Construct validity was established revealing the 6-factor structure of QBPDS-M with 60.62% of the total variance. Content validity was confirmed with no floor or ceiling effects. Convergent validity showed a moderate correlation with RMDQ (r = 0.68 and P = 0.000) and NPRS (r = 0.345 and P = 0.002). The QBPDS-M demonstrated excellent internal consistency (Cronbach's alpha = 0.893) and good test-retest reliability (ICC2,1 = 0.862).Conclusion:Psychometric analysis of QBPDS-M demonstrated satisfactory construct validity, internal consistency, and test-retest reliability. It can be utilized for clinical and research purposes to assess the functional disability in Marathi-speaking chronic LBP patients.