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Psychometric properties and cross-cultural adaptation of the Brazilian Quebec back pain disability scale questionnaire.
Spine (Phila Pa 1976). 2009 Jun 01; 34(13):E459-64.S

Abstract

STUDY DESIGN

Cross-cultural translation and psychometric testing.

OBJECTIVE

To translate and cross-culturally adapt the Quebec Back Pain Disability Scale (QDS) to Brazilian Portuguese and to examine its validity and reliability.

SUMMARY OF BACKGROUND DATA

Current literature shows the need to adopt reliable and internationally standardized methods for the analysis of low back pain. To our knowledge, this specific questionnaire has not been translated and validated for Portuguese-speaking patients.

METHODS

The translation and cross-cultural adaptation of the QDS were developed in agreement with internationally recommended methodology, and the resulting product was evaluated in this study with 54 consecutive patients. Internal consistency was obtained through Cronbach's alpha; reliability was estimated through the intraclass correlation coefficient and the Bland and Altman agreement (d = mean difference). Validity was determined by correlating the scores of the Brazil-QDS with the Brazilian version of the Roland-Morris Questionnaire and Visual Analogue Pain Scale by means of the Spearman rank correlation coefficient.

RESULTS

The internal consistency obtained was excellent (Cronbach's alpha = 0.97). Intraobserver and interobserver reliability were considered strong (ICC = 0.93-d = 0.68 and 0.96-d = 0.57, respectively). The correlation with Brazilian Roland-Morris Questionnaire and with the Visual Analogue Scale was high (r = 0.857; r = 0.758, respectively).

CONCLUSION

The data showed that the process of translation and cross-cultural adaptation were successful and that the adapted instrument demonstrated excellent psychometric properties.

Authors+Show Affiliations

Department of Ortopedia, Unoesc, Santa Catarina, Brazil. marcelo@netcon.com.brNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

19478648

Citation

Rodrigues, Marcelo F., et al. "Psychometric Properties and Cross-cultural Adaptation of the Brazilian Quebec Back Pain Disability Scale Questionnaire." Spine, vol. 34, no. 13, 2009, pp. E459-64.
Rodrigues MF, Michel-Crosato E, Cardoso JR, et al. Psychometric properties and cross-cultural adaptation of the Brazilian Quebec back pain disability scale questionnaire. Spine (Phila Pa 1976). 2009;34(13):E459-64.
Rodrigues, M. F., Michel-Crosato, E., Cardoso, J. R., & Traebert, J. (2009). Psychometric properties and cross-cultural adaptation of the Brazilian Quebec back pain disability scale questionnaire. Spine, 34(13), E459-64. https://doi.org/10.1097/BRS.0b013e3181a5605a
Rodrigues MF, et al. Psychometric Properties and Cross-cultural Adaptation of the Brazilian Quebec Back Pain Disability Scale Questionnaire. Spine (Phila Pa 1976). 2009 Jun 1;34(13):E459-64. PubMed PMID: 19478648.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Psychometric properties and cross-cultural adaptation of the Brazilian Quebec back pain disability scale questionnaire. AU - Rodrigues,Marcelo F, AU - Michel-Crosato,Edgard, AU - Cardoso,Jefferson R, AU - Traebert,Jefferson, PY - 2009/5/30/entrez PY - 2009/5/30/pubmed PY - 2009/9/26/medline SP - E459 EP - 64 JF - Spine JO - Spine (Phila Pa 1976) VL - 34 IS - 13 N2 - STUDY DESIGN: Cross-cultural translation and psychometric testing. OBJECTIVE: To translate and cross-culturally adapt the Quebec Back Pain Disability Scale (QDS) to Brazilian Portuguese and to examine its validity and reliability. SUMMARY OF BACKGROUND DATA: Current literature shows the need to adopt reliable and internationally standardized methods for the analysis of low back pain. To our knowledge, this specific questionnaire has not been translated and validated for Portuguese-speaking patients. METHODS: The translation and cross-cultural adaptation of the QDS were developed in agreement with internationally recommended methodology, and the resulting product was evaluated in this study with 54 consecutive patients. Internal consistency was obtained through Cronbach's alpha; reliability was estimated through the intraclass correlation coefficient and the Bland and Altman agreement (d = mean difference). Validity was determined by correlating the scores of the Brazil-QDS with the Brazilian version of the Roland-Morris Questionnaire and Visual Analogue Pain Scale by means of the Spearman rank correlation coefficient. RESULTS: The internal consistency obtained was excellent (Cronbach's alpha = 0.97). Intraobserver and interobserver reliability were considered strong (ICC = 0.93-d = 0.68 and 0.96-d = 0.57, respectively). The correlation with Brazilian Roland-Morris Questionnaire and with the Visual Analogue Scale was high (r = 0.857; r = 0.758, respectively). CONCLUSION: The data showed that the process of translation and cross-cultural adaptation were successful and that the adapted instrument demonstrated excellent psychometric properties. SN - 1528-1159 UR - https://www.unboundmedicine.com/medline/citation/19478648/Psychometric_properties_and_cross_cultural_adaptation_of_the_Brazilian_Quebec_back_pain_disability_scale_questionnaire_ L2 - https://doi.org/10.1097/BRS.0b013e3181a5605a DB - PRIME DP - Unbound Medicine ER -