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AbstractPurposeMethodsResultsConclusion\nIMPLICATIONS FOR REHABILITATION:There are no disease-specific tools for assessing the functioning of patients with asthma. This study aims to evaluate the psychometric properties of the Brazilian version of the World Health Organization Disability Assessment Schedule (WHODAS 2.0) in individuals with asthma.101 individuals with asthma responded to the 36-item version of the WHODAS 2.0, Asthma Quality of Life Questionnaire (AQLQ), and Asthma Control Test (ACT). The following psychometric properties were tested: internal consistency, factor structure, and convergent and discriminative validity.Homogeneity was found between WHODAS 2.0 items and domains, except “Getting along” (Cronbach’s α = 0.57). When item “D4.5 Sexual activities” was deleted, the Cronbach’s increased to 0.70. Exploratory factor analysis identified four factors (explained variance 56%). There was a strong correlation between the WHODAS 2.0 and AQLQ (r=-0.72) and between the WHODAS 2.0 and ACT (r= −0.59). There was no evidence of the influence of obstruction level (FEV1) on functioning.WHODAS 2.0 is a valid and reliable tool for assessing functioning in individuals with asthma. Exclusion of item D.4.5 Sexual activity increased the homogeneity between the items of the “Getting along” domain. When applied to asthmatics, the WHODAS total functioning score is preferable to the domain-specific scores.WHODAS 2.0 is a valid and reliable tool for assessing the functioning of patients with asthma.Exploratory factor analysis identified four factors that differ from the original six-domain structure of the WHODAS 2.0 36-item version.WHODAS 2.0 is recommended for professionals who rehabilitate patients with asthma.WHODAS 2.0 is a valid and reliable tool for assessing the functioning of patients with asthma.Exploratory factor analysis identified four factors that differ from the original six-domain structure of the WHODAS 2.0 36-item version.WHODAS 2.0 is recommended for professionals who rehabilitate patients with asthma. [ABSTRACT FROM AUTHOR]

COPD fits the profile of disabling health conditions. This study aims to validate the World Health Organization Disability Assessment Schedule 2.0 (WHODAS 2.0) in individuals with COPD. 100 participants with COPD responded to the Brazilian 36-item version of the WHODAS 2.0, as well as the Saint George's Respiratory Questionnaire (SGRQ), and the COPD Assessment Test (CAT). Spirometric data was extracted from medical records. The internal consistency analysis showed coefficients for all WHODAS 2.0 domains with a strong correlation (0.70–0.85) except for Life activities, which had a moderate correlation (coefficient = 0.60). In the construct analysis, the coefficients for the WHODAS and SGRQ domains presented a consistent correlation among them, varying from 0.40 to 0.69. No correlation was evidenced among the WHODAS domains and the spirometric data, highlighting that linear measures fail when associated with the functioning of an individual with COPD. Discriminative analysis revealed a capacity for the WHODAS 2.0 to distinguish among COPD different levels of clinical impact obtained from CAT excluding the Getting along domain. The WHODAS 2.0 shows as a valid instrument that can sensibly assess functioning differences related to the clinical impact classification level in subjects with COPD. WHODAS 2.0 is a valid tool to assess functioning in subjects with COPD. WHODAS 2.0 is sensitive to functioning differences related to classification level and to clinical impact in individuals with COPD. As a Patient-Reported Outcome Measure (PROM), WHODAS 2.0 offers the opportunity to develop clinical patient-centered interventions, improving the health care. As a low-cost, easy-to-use tool, WHODAS can be a useful resource in the process of clinical assessment of patient functioning. [ABSTRACT FROM AUTHOR]