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. 2017 Feb;39(2):44-52.
doi: 10.1055/s-0037-1598599. Epub 2017 Feb 23.

Validation of the 36-item version of the WHO Disability Assessment Schedule 2.0 (WHODAS 2.0) for assessing women's disability and functioning associated with maternal morbidity

Carla Silveira  1 , Mary Angela Parpinelli  1 , Rodolfo Carvalho Pacagnella  1 , Carla Betina Andreucci  1 , Carina Robles Angelini  1 , Elton Carlos Ferreira  1 , José Guilherme Cecatti  1 ; COMMAG study group
Affiliations

Validation of the 36-item version of the WHO Disability Assessment Schedule 2.0 (WHODAS 2.0) for assessing women's disability and functioning associated with maternal morbidity

Carla Silveira et al. Rev Bras Ginecol Obstet. 2017 Feb.

Abstract
in English, Portuguese

Objective To validate the translation and adaptation to Brazilian Portuguese of 36 items from the World Health Organizaton Disability Assessment Schedule 2.0 (WHODAS 2.0), regarding their content and structure (construct), in a female population after pregnancy. Methods This is a validation of an instrument for the evaluation of disability and functioning and an assessment of its psychometric properties, performed in a tertiary maternity and a referral center specialized in high-risk pregnancies in Brazil. A sample of 638 women in different postpartum periods who had either a normal or a complicated pregnancy was included. The structure was evaluated by exploratory factor analysis (EFA) and confirmatory factor analysis (CFA), while the content and relationships among the domains were assessed through Pearson's correlation coefficient. The sociodemographic characteristics were identified, and the mean scores with their standard deviations for the 36 questions of the WHODAS 2.0 were calculated. The internal consistency was evaluated byCronbach's α. Results Cronbach's α was higher than 0.79 for both sets of questons of the questionnaire. The EFA and CFA for the main 32 questions exhibited a total variance of 54.7% (Kaiser-Meyer-Olkin [KMO] measure of sampling adequacy = 0.934; p < 0.001) and 53.47% (KMO = 0.934; p < 0.001) respectively. There was a significant correlation among the 6 domains (r = 0.571-0.876), and a moderate correlation among all domains (r = 0.476-0.694). Conclusion The version of the WHODAS 2.0 instrument adapted to Brazilian Portuguese showed good psychometric properties in this sample, and therefore could be applied to populations of women regarding their reproductive history.

Resumo: Objetivo Validar a versão adaptada para o português brasileiro do instrumento World Health Organizaton Disability Assessment Schedule 2.0 (WHODAS 2.0), em seu conteúdo e estrutura (construto), em uma população de mulheres após a gravidez.

Métodos Trata-se de validação de um instrumento para incapacidade e funcionalidade, incluindo suas propriedades psicométricas, realizada em uma maternidade de referência em gestação de alto risco no Brasil. Incluiu uma amostra de 638 mulheres em diferentes períodos pós-parto que tiveram uma gravidez normal ou com complicações. A estrutura foi avaliada por análise fatorial exploratória (AFE) e análise fatorial confirmatória (AFC), enquanto o conteúdo e as associações entre os domínios foram avaliados por meio do coeficiente de correlação de Pearson. Foram identificadas características sociodemográficas, e os escores médios do WHODAS 2.0 para as 36 questões foram calculados. A consistência interna foi avaliada pelo método α de Cronbach.

Resultados O α de Cronbach foi maior do que 0,79 para os dois conjuntos de perguntas do questionário. A AFE e a AFC para as 32 questões apresentaram uma variância total de 54,7% (medida de adequação da amostra de Kaiser-Meyer-Olkin [KMO] = 0,934; p < 0,001) e 53,47% (KMO = 0,934; p < 0,001), respectivamente. Houve uma correlação significativa entre os 6 domínios (r = 0,571–0,876), e moderada correlação entre todos os domínios (r = 0,476–0,694).

Conclusão O instrumento WHODAS 2.0, adaptado para o português do Brasil, mostrou boas propriedades psicométricas nessa amostra e, portanto, pode ser aplicado a populações de mulheres com relação à sua história reprodutiva.

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Figures

Fig. 1
Fig. 1
Confirmatory Factor Analysis (CFA) of the Brazilian Portuguese version of the WHODAS 2.0 questionnaire with 36 questions and 6 domains (maximum likelihood method) for disability (*p < 0.01).
See this image and copyright information in PMC

References

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