Modified WHODAS-II provides valid measure of global disability but filter items increased skewness

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  • dc.contributor.author Korff, Michael von
  • dc.contributor.author Crane, Paul K.
  • dc.contributor.author Alonso Caballero, Jordi
  • dc.contributor.author Vilagut Saiz, Gemma, 1975-
  • dc.contributor.author Angermeyer, Matthias C.
  • dc.contributor.author Bruffaerts, Ronny
  • dc.contributor.author Girolamo, Giovanni de
  • dc.contributor.author Gureje, Oye
  • dc.contributor.author de Graaf, Ron
  • dc.contributor.author Huang, Yueqin
  • dc.contributor.author Iwata, Noboru
  • dc.contributor.author Karam, Elie G.
  • dc.contributor.author Kovess, Viviane
  • dc.contributor.author Lara, Carmen
  • dc.contributor.author Levinson, Daphna
  • dc.contributor.author Posada Villa, José
  • dc.contributor.author Scott, Kate M.
  • dc.contributor.author Ormel, Johan
  • dc.date.accessioned 2019-03-06T11:31:30Z
  • dc.date.available 2019-03-06T11:31:30Z
  • dc.date.issued 2008
  • dc.description.abstract OBJECTIVE: The WHODAS-II was substantially modified for use in the World Mental Health Surveys. This article considers psychometric properties and implications of filter items used to reduce respondent burden of the modified WHODAS-II. STUDY DESIGN AND SETTING: Seventeen surveys in 16 countries administered a modified WHODAS-II to population samples (N=38,934 adults). Modifications included introducing filter questions for four subscales and substituting questions on the number of days activity was limited for the Life Activities domain. We evaluated distributional properties, reliability, and validity of the modified WHODAS-II. RESULTS: Most respondents (77%-99%) had zero scores on filtered subscales. Lower bound estimates of internal consistency (alpha) for the filtered subscales were typically in the 0.70s, but were higher for the Global scale. Loadings of subscale scores on a Global Disability factor were moderate to high. Correlations with the Sheehan Disability Scale were modest but consistently positive, while correlations with SF-12 Physical Component Summary were considerably higher. Cross-national variability in disability scores was observed, but was not readily explainable. CONCLUSIONS: Internal consistency and validity of the modified WHODAS-II was generally supported, but use of filter questions impaired measurement properties. Group differences in modified WHODAS-II disability scores may be compared within, but not necessarily across, countries.
  • dc.description.sponsorship These activities were supported by the United States National Institute of Mental Health (R01MH070884), the John D. and Catherine T. MacArthur Foundation, the Pfizer Foundation, the US Public Health Service (R13-MH066849, R01-MH069864, and R01 DA016558), the Fogarty International Center (FIRCA R01-TW006481). The Mexican National Comorbidity Survey (MNCS) is supported by The National Institute of Psychiatry Ramon de la Fuente (INPRFMDIES 4280) and by the National Council on Science and Technology (CONACyT-G30544-H). The ESEMeD project was funded by the European Commission (Contracts QLG5-1999-01042; SANCO 2004123), the Piedmont Region (Italy), Fondo de Investigación Sanitaria, Instituto de Salud Carlos III, Spain (FIS 00/0028), Ministerio de Ciencia y Tecnología, Spain (SAF 2000-158-CE), Departament de Salut, Generalitat de Catalunya, Spain. The World Mental Health Japan (WMHJ) Survey is supported by the Grant for Research on Psychiatric and Neurological Diseases and Mental Health (H13-SHOGAI-023, H14-TOKUBETSU-026, H16-KOKORO-013) from the Japan Ministry of Health, Labour and Welfare. The South Africa Stress and Health Study (SASH) is supported by the US National Institute of Mental Health (R01-MH059575). The Ukraine Comorbid Mental Disorders during Periods of Social Disruption (CMDPSD) study is funded by the US National Institute of Mental Health (RO1-MH61905). The US National Comorbidity Survey Replication (NCS-R) is supported by the National Institute of Mental Health (NIMH; U01-MH60220) with supplemental support from the Robert Wood Johnson Foundation (RWJF; Grant 044708)
  • dc.format.mimetype application/pdf
  • dc.identifier.citation Von Korff M, Crane PK, Alonso J, Vilagut G, Angermeyer MC, Bruffaerts R et al. Modified WHODAS-II provides valid measure of global disability but filter items increased skewness. J Clin Epidemiol. 2008 Nov;61(11):1132-43. DOI: 10.1016/j.jclinepi.2007.12.009
  • dc.identifier.doi http://dx.doi.org/10.1016/j.jclinepi.2007.12.009
  • dc.identifier.issn 0895-4356
  • dc.identifier.uri http://hdl.handle.net/10230/36763
  • dc.language.iso eng
  • dc.publisher Elsevier
  • dc.relation.ispartof Journal of Clinical Epidemiology. 2008 Nov;61(11):1132-43
  • dc.rights © Elsevier http://dx.doi.org/10.1016/j.jclinepi.2007.12.009
  • dc.rights.accessRights info:eu-repo/semantics/openAccess
  • dc.subject.other Salut
  • dc.subject.other Malalties mentals
  • dc.title Modified WHODAS-II provides valid measure of global disability but filter items increased skewness
  • dc.type info:eu-repo/semantics/article
  • dc.type.version info:eu-repo/semantics/acceptedVersion

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