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Validation of the Korean version of the Quebec Back Pain Disability Scale.
J Spinal Disord Tech. 2012 Dec; 25(8):447-50.JS

Abstract

STUDY DESIGN

Prospective study.

OBJECTIVE

To evaluate the reliability and validity of the adapted Korean version of the Quebec Back Pain Disability Scale (QDS).

SUMMARY OF BACKGROUND DATA

The Korean version of the QDS has not been validated.

METHODS

Translation/retranslation of the English version of QDS was conducted, and all steps of the cross-cultural adaptation process were performed. The Korean version of the Visual Analog Scale (VAS) measure of pain, QDS and the previously validated Oswestry Disability Index (ODI) and Short Form-36 (SF-36) were mailed to 100 consecutive patients with chronic low back pain of at least 3 months duration. Eighty patients responded to the first mailing of questionnaires and 59 of the first time responder returned their second survey. The average age of the 59 patients (39 female, 20 male) was 48.0 years. Reliability assessment was determined by estimating κ statistics of agreement for each item, the intraclass correlation coefficient (ICC) and the Cronbach α. Concurrent and construct validity was evaluated by comparing the responses of QDS with the results of VAS and responses of ODI and SF-36 by using the Pearson correlation coefficient.

RESULTS

The constructed Bland Altman plot showed a good reliability. All items had a κ statistics of agreement > 0.6. The QDS showed excellent test/retest reliability as evidenced by the high ICC for both assessments (ICC = 0.9094; P < 0.001). Internal consistency was found to be very good at both assessments with the Cronbach α (0.9172 and 0.9319 at first and second assessments, respectively). The QDS was correlated with the VAS (r = 0.647; P < 0.001 and r = 0.609; P < 0.001 at first and second assessments, respectively) and with the ODI (r = 0.718; P < 0.001 and r = 0.690; P < 0.001, respectively). The Korean version of the QDS showed a good significant correlation with functional scales of SF-36.

CONCLUSIONS

The adapted Korean version of the QDS was successfully translated and showed acceptable measurement properties, and as such, is considered suitable for outcome assessments in the Korean-speaking patients with low back pain.

Authors+Show Affiliations

Department of Orthopaedic Surgery, Medical Research Institute, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Validation Study

Language

eng

PubMed ID

22124429

Citation

Suh, Kuen Tak, et al. "Validation of the Korean Version of the Quebec Back Pain Disability Scale." Journal of Spinal Disorders & Techniques, vol. 25, no. 8, 2012, pp. 447-50.
Suh KT, Kim JI, Lim JM, et al. Validation of the Korean version of the Quebec Back Pain Disability Scale. J Spinal Disord Tech. 2012;25(8):447-50.
Suh, K. T., Kim, J. I., Lim, J. M., Goh, T. S., & Lee, J. S. (2012). Validation of the Korean version of the Quebec Back Pain Disability Scale. Journal of Spinal Disorders & Techniques, 25(8), 447-50. https://doi.org/10.1097/BSD.0b013e3182337792
Suh KT, et al. Validation of the Korean Version of the Quebec Back Pain Disability Scale. J Spinal Disord Tech. 2012;25(8):447-50. PubMed PMID: 22124429.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Validation of the Korean version of the Quebec Back Pain Disability Scale. AU - Suh,Kuen Tak, AU - Kim,Jeung Il, AU - Lim,Jong Min, AU - Goh,Tae Sik, AU - Lee,Jung Sub, PY - 2011/11/30/entrez PY - 2011/11/30/pubmed PY - 2013/5/3/medline SP - 447 EP - 50 JF - Journal of spinal disorders & techniques JO - J Spinal Disord Tech VL - 25 IS - 8 N2 - STUDY DESIGN: Prospective study. OBJECTIVE: To evaluate the reliability and validity of the adapted Korean version of the Quebec Back Pain Disability Scale (QDS). SUMMARY OF BACKGROUND DATA: The Korean version of the QDS has not been validated. METHODS: Translation/retranslation of the English version of QDS was conducted, and all steps of the cross-cultural adaptation process were performed. The Korean version of the Visual Analog Scale (VAS) measure of pain, QDS and the previously validated Oswestry Disability Index (ODI) and Short Form-36 (SF-36) were mailed to 100 consecutive patients with chronic low back pain of at least 3 months duration. Eighty patients responded to the first mailing of questionnaires and 59 of the first time responder returned their second survey. The average age of the 59 patients (39 female, 20 male) was 48.0 years. Reliability assessment was determined by estimating κ statistics of agreement for each item, the intraclass correlation coefficient (ICC) and the Cronbach α. Concurrent and construct validity was evaluated by comparing the responses of QDS with the results of VAS and responses of ODI and SF-36 by using the Pearson correlation coefficient. RESULTS: The constructed Bland Altman plot showed a good reliability. All items had a κ statistics of agreement > 0.6. The QDS showed excellent test/retest reliability as evidenced by the high ICC for both assessments (ICC = 0.9094; P < 0.001). Internal consistency was found to be very good at both assessments with the Cronbach α (0.9172 and 0.9319 at first and second assessments, respectively). The QDS was correlated with the VAS (r = 0.647; P < 0.001 and r = 0.609; P < 0.001 at first and second assessments, respectively) and with the ODI (r = 0.718; P < 0.001 and r = 0.690; P < 0.001, respectively). The Korean version of the QDS showed a good significant correlation with functional scales of SF-36. CONCLUSIONS: The adapted Korean version of the QDS was successfully translated and showed acceptable measurement properties, and as such, is considered suitable for outcome assessments in the Korean-speaking patients with low back pain. SN - 1539-2465 UR - https://www.unboundmedicine.com/medline/citation/22124429/Validation_of_the_Korean_version_of_the_Quebec_Back_Pain_Disability_Scale_ L2 - https://doi.org/10.1097/BSD.0b013e3182337792 DB - PRIME DP - Unbound Medicine ER -