Clinimetric testing of three self-report outcome measures for low back pain patients in Brazil: which one is the best?

Study Design: Translation, cross-cultural adaptation, and clinimetric testing of self-report outcome measures.

Objective: The aims of this investigation were to perform the translation and cross-cultural adaptation of the Patient-Specific Functional Scale (PSFS) into Brazilian-Portuguese and to perform a head-to-head comparison of the clinimetric properties of the Brazilian-Portuguese versions of the PSFS, the Roland-Morris Disability Questionnaire (RMDQ) and the Functional Rating Index (FRI).

Summary Of Background Data: To date, there is no Brazilian-Portuguese version of the PSFS available and no head-to-head comparison of the Brazilian-Portuguese versions of the PSFS, RMDQ, and FRI has been undertaken.

Psychometric characteristics of the Brazilian-Portuguese versions of the Functional Rating Index and the Roland Morris Disability Questionnaire.

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.