Is it time to rethink disability assessment in low back pain? Reliability, internal consistency, and construct validity of the Brazilian WHODAS 2.0 for chronic low back pain.
Tuyra Francisca Castro E Silva, Paula Maciel de Sousa Silva Medeiros, Camila Ferreira Leite, Shamyr Sulyvan Castro, Ana Carla Lima Nunes, Fabianna Resende Jesus-Moraleida
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引用次数: 0
Abstract
Background and purpose: The World Health Disability Assessment Schedule 2.0 (WHODAS 2.0) was developed to assess health and disability based on the biopsychosocial model. The WHODAS 2.0 has not been validated for Brazilians with chronic non-specific low back pain (LBP). We aimed to evaluate the reliability, internal consistency, and construct validity of the Brazilian version of the WHODAS 2.0 in patients with chronic LBP.
Methods: Methodological study. The Brazilian version of the WHODAS 2.0 was applied to 100 volunteers with chronic nonspecific LBP. Test-retest reliability, internal consistency, and construct validity were assessed using the Spearman correlation test, Cronbach's alpha (α) coefficient, and Spearman's correlation test between WHODAS 2.0, the Oswestry Disability Index (ODI), Roland-Morris Disability Questionnaire (RMDQ), and Fear Avoidance Beliefs Questionnaire (FABQ), respectively.
Results: WHODAS 2.0 showed satisfactory test-retest reliability with a moderate correlation for total WHODAS 2.0 (r = 0.75, p < 0.05). Internal consistency was adequate for all domains and total score (α = 0.82-0.96). Regarding construct validity, WHODAS 2.0, ODI (r = 0.70, p < 0.05), and WHODAS 2.0 and RMDQ (r = 0.71, p < 0.05) had significant correlations. Total WHODAS 2.0 and FABQ-Phys subscale scores correlated moderately (r = 0.66, p < 0.05).
Discussion: The Brazilian WHODAS 2.0 was proved to be a valid and reliable tool for patients with chronic LBP. The item referring to sexual intercourse had 27% and 30% of the missing values during the test and retest stage, respectively and had a high percentage of missing data for work-related questions (41% missing data) in the life activities domain; therefore, the data must be interpreted with caution.
Implications for physiotherapy practice: WHODAS 2.0 can be used as a disability assessment strategy from a biopsychosocial perspective in this population.
期刊介绍：
Physiotherapy Research International is an international peer reviewed journal dedicated to the exchange of knowledge that is directly relevant to specialist areas of physiotherapy theory, practice, and research. Our aim is to promote a high level of scholarship and build on the current evidence base to inform the advancement of the physiotherapy profession. We publish original research on a wide range of topics e.g. Primary research testing new physiotherapy treatments; methodological research; measurement and outcome research and qualitative research of interest to researchers, clinicians and educators. Further, we aim to publish high quality papers that represent the range of cultures and settings where physiotherapy services are delivered. We attract a wide readership from physiotherapists and others working in diverse clinical and academic settings. We aim to promote an international debate amongst the profession about current best evidence based practice. Papers are directed primarily towards the physiotherapy profession, but can be relevant to a wide range of professional groups. The growth of interdisciplinary research is also key to our aims and scope, and we encourage relevant submissions from other professional groups. The journal actively encourages submissions which utilise a breadth of different methodologies and research designs to facilitate addressing key questions related to the physiotherapy practice. PRI seeks to encourage good quality topical debates on a range of relevant issues and promote critical reflection on decision making and implementation of physiotherapy interventions.
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