Validação do instrumento WHODAS 2.0 para dor lombar crônica inespecífica: dados parciais

Abstract

The WHO created the World Health Disability Assessment Schedule (WHODAS 2.0) aiming at the operationalization of the evaluation of ICF domains. This instrument has not been tested yet in individuals with chronic low back pain (LBP), most disabling health condition worldwide. Objective: To test the criteria validity, internal consistency and intra-examiner test-retest reliability of the WHODAS 2.0 Brazilian version for individuals with non-specific LBP. Methods: The WHODAS 2.0 Brazilian version, previously translated and adapted to Portuguese, was applied in a sample of individuals with LBP treated in the primary care, as well as the Oswestry Disability Index (ODI), Roland Morris Disability Questionnaire, Fear Avoidance Beliefs Questionnaire and the Numerical Rating Scale. We tested the properties of measure reliability test-retest intra-examiner, concurrent criteria validity, comparing WHODAS instruments 2.0 Brazilian version and ODI and, the internal consistency of the WHODAS 2.0. Results: The sample consisted of 24 participants with non-specific LBP. The internal consistency presented desired values for the domains of cognition, mobility, self-care and participation (ρ > 0.8). Regarding the values of test-retest reliability, all domains had moderate to strong correlation values, and in relation to criteria validity, only one domain had a desired value (ρ = 0.7 and p <0.01). Conclusion: Partial validation data from WHODAS 2.0 point to the adequacy of the instrument for the sample studied, although the domains of interpersonal relationship and activities do not present a desired correlation. The final validation study may indicate the consistency of these measures in individuals with LBP.