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Psychometric characteristics of the Brazilian-Portuguese versions of the Functional Rating Index and the Roland Morris Disability Questionnaire.
Spine (Phila Pa 1976). 2007 Aug 01; 32(17):1902-7.S

Abstract

STUDY DESIGN

Translation, cross-cultural adaptation and psychometric testing of self-report outcome measurements.

OBJECTIVES

The aims of this study were to adapt the Functional Rating Index (FRI) to Brazilian-Portuguese and to test the psychometric properties of this new questionnaire and the Brazilian-Roland Morris Disability Questionnaire (RMDQ).

SUMMARY OF BACKGROUND DATA

Self-report measures are commonly used in clinical practice and in research studies. Most existing questionnaires were developed in English and there is only 1 Brazilian-Portuguese cross-cultural adaptation of a spine outcome measure.

METHODS

The FRI was translated and adapted into Brazilian-Portuguese according to the Guidelines for the process of cross-cultural adaptation of self report measures. The Brazilian-Portuguese FRI and RMDQ were tested for internal consistency, reliability, ceiling and floor effects, construct validity, and responsiveness in 140 low back pain (LBP) patients.

RESULTS

A very high level of internal consistency (Cronbach's alpha = 0.92) and reliability [ICC = 0.95 (95% confidence interval, 0.93-0.97)] was shown for both instruments. The FRI and RMDQ were highly correlated (r = 0.80), while both the FRI and RMDQ were moderately correlated with pain at baseline (r = 0.67 and 0.55, respectively). No ceiling or floor effects were detected; however, the responsiveness of both questionnaires was quite small (RMDQ ES = 0.10 [84% confidence interval, 0.04-0.16] and FRI ES = 0.18 [84% confidence interval, 0.11-0.24]).

CONCLUSION

The results of this study indicate that the Brazilian-Portuguese versions of the FRI and RMDQ are reliable and valid instruments for the measurement of disability in Brazilian-Portuguese-speaking patients with LBP presenting for physiotherapy treatment. Both instruments are suitable for use in clinical practice and research studies.

Authors+Show Affiliations

Back Pain Research Group, School of Physiotherapy, University of Sydney, Lidcombe NSW, Australia. lcos3060@usyd.edu.auNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't
Validation Study

Language

eng

PubMed ID

17762300

Citation

Costa, Leonardo Oliveira Pena, et al. "Psychometric Characteristics of the Brazilian-Portuguese Versions of the Functional Rating Index and the Roland Morris Disability Questionnaire." Spine, vol. 32, no. 17, 2007, pp. 1902-7.
Costa LO, Maher CG, Latimer J, et al. Psychometric characteristics of the Brazilian-Portuguese versions of the Functional Rating Index and the Roland Morris Disability Questionnaire. Spine (Phila Pa 1976). 2007;32(17):1902-7.
Costa, L. O., Maher, C. G., Latimer, J., Ferreira, P. H., Pozzi, G. C., & Ribeiro, R. N. (2007). Psychometric characteristics of the Brazilian-Portuguese versions of the Functional Rating Index and the Roland Morris Disability Questionnaire. Spine, 32(17), 1902-7.
Costa LO, et al. Psychometric Characteristics of the Brazilian-Portuguese Versions of the Functional Rating Index and the Roland Morris Disability Questionnaire. Spine (Phila Pa 1976). 2007 Aug 1;32(17):1902-7. PubMed PMID: 17762300.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Psychometric characteristics of the Brazilian-Portuguese versions of the Functional Rating Index and the Roland Morris Disability Questionnaire. AU - Costa,Leonardo Oliveira Pena, AU - Maher,Chris G, AU - Latimer,Jane, AU - Ferreira,Paulo Henrique, AU - Pozzi,Giovanni Campos, AU - Ribeiro,Rodrigo Nogueira, PY - 2007/9/1/pubmed PY - 2007/10/3/medline PY - 2007/9/1/entrez SP - 1902 EP - 7 JF - Spine JO - Spine (Phila Pa 1976) VL - 32 IS - 17 N2 - STUDY DESIGN: Translation, cross-cultural adaptation and psychometric testing of self-report outcome measurements. OBJECTIVES: The aims of this study were to adapt the Functional Rating Index (FRI) to Brazilian-Portuguese and to test the psychometric properties of this new questionnaire and the Brazilian-Roland Morris Disability Questionnaire (RMDQ). SUMMARY OF BACKGROUND DATA: Self-report measures are commonly used in clinical practice and in research studies. Most existing questionnaires were developed in English and there is only 1 Brazilian-Portuguese cross-cultural adaptation of a spine outcome measure. METHODS: The FRI was translated and adapted into Brazilian-Portuguese according to the Guidelines for the process of cross-cultural adaptation of self report measures. The Brazilian-Portuguese FRI and RMDQ were tested for internal consistency, reliability, ceiling and floor effects, construct validity, and responsiveness in 140 low back pain (LBP) patients. RESULTS: A very high level of internal consistency (Cronbach's alpha = 0.92) and reliability [ICC = 0.95 (95% confidence interval, 0.93-0.97)] was shown for both instruments. The FRI and RMDQ were highly correlated (r = 0.80), while both the FRI and RMDQ were moderately correlated with pain at baseline (r = 0.67 and 0.55, respectively). No ceiling or floor effects were detected; however, the responsiveness of both questionnaires was quite small (RMDQ ES = 0.10 [84% confidence interval, 0.04-0.16] and FRI ES = 0.18 [84% confidence interval, 0.11-0.24]). CONCLUSION: The results of this study indicate that the Brazilian-Portuguese versions of the FRI and RMDQ are reliable and valid instruments for the measurement of disability in Brazilian-Portuguese-speaking patients with LBP presenting for physiotherapy treatment. Both instruments are suitable for use in clinical practice and research studies. SN - 1528-1159 UR - https://www.unboundmedicine.com/medline/citation/17762300/Psychometric_characteristics_of_the_Brazilian_Portuguese_versions_of_the_Functional_Rating_Index_and_the_Roland_Morris_Disability_Questionnaire_ L2 - https://doi.org/10.1097/BRS.0b013e31811eab33 DB - PRIME DP - Unbound Medicine ER -