Cross-Cultural Adaptation, Reliability, and Validity of Urdu Version of Örebro Musculoskeletal Pain Screening Questionnaire in Non-Specific Low Back Pain Patients.

OBJECTIVE

To translate the Örebro Musculoskeletal Pain Screening Questionnaire (ÖMPSQ) into Urdu and to determine the psychometric properties of its Urdu version.

METHODS

This cross-sectional study recruited 300 participants (18-60 years) with non-specific low back pain (NSLBP), who were able to read Urdu. Test-retest reliability was assessed using intra-class correlation coefficient (ICC), and reproducibility through Cronbach's α. Face and content validity were examined via individual interviews, and construct validity by correlating with relevant reference standards. Exploratory factor analysis (EFA) & confirmatory factor analysis (CFA) was also carried out.

RESULTS

ÖMPSQ was successfully translated into Urdu version with acceptable face and content validity. ÖMPSQ Urdu version showed acceptable internal consistency (α=0.789) & good test-retest reliability (ICC=0.784, 95% confidence interval, p<0.001) while good correlation was demonstrated between ÖMPSQ and Chronic Pain Grade Scale (pain and disability subscales i.e., r=0.809 and 0.807, respectively). However, Roland-Morris Disability Questionnaire showed moderate correlation (r=0.513). Additionally, no significant floor or ceiling effects were observed in the ÖMPSQ Urdu version. EFA revealed a five-factor solution using twenty items, 89.21% was the total item variance in the database, while CFA demonstrated good model fit with strong factor loadings and acceptable fit indices.

CONCLUSION

The ÖMPSQ Urdu version is valid and reliable for assessing the risk of long-term disability & workplace absence in NSLBP patients.