World Health Organization disability assessment schedule 2.0: An international systematic review

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Abstract

This systematic review examines research and practical applications of the World Health Organization Disability Assessment Schedule (WHODAS 2.0) as a basis for establishing specific criteria for evaluating relevant international scientific literature. The aims were to establish the extent of international dissemination and use of WHODAS 2.0 and analyze psychometric research on its various translations and adaptations. In particular, we wanted to highlight which psychometric features have been investigated, focusing on the factor structure, reliability, and validity of this instrument.

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The disablement process

Lois Verbrugge, Alan Jette (1994)

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Prevalence and distribution of major depressive disorder in African Americans, Caribbean blacks, and non-Hispanic whites: results from the National Survey of American Life.

David Williams, Hector M González, Harold Neighbors … (2007)

Little is known about the relationship between race/ethnicity and depression among US blacks. To estimate the prevalence, persistence, treatment, and disability of depression in African Americans, Caribbean blacks, and non-Hispanic whites in the National Survey of American Life. A slightly modified adaptation of the World Health Organization World Mental Health version of the Composite International Diagnostic Interview. National household probability samples of noninstitutionalized African Americans, Caribbean blacks, and non-Hispanic whites in the United States conducted between February 2, 2001, and June 30, 2003. A total of 3570 African Americans, 1621 Caribbean blacks, and 891 non-Hispanic whites aged 18 years and older (N = 6082). Lifetime and 12-month diagnoses of DSM-IV major depressive disorder (MDD), 12-month mental health services use, and MDD disability as quantified using the Sheehan Disability Scale and the World Health Organization's Disability Assessment Schedule II. Lifetime MDD prevalence estimates were highest for whites (17.9%), followed by Caribbean blacks (12.9%) and African Americans (10.4%); however, 12-month MDD estimates across groups were similar. The chronicity of MDD was higher for both black groups (56.5% for African Americans and 56.0% for Caribbean blacks) than for whites (38.6%). Fewer than half of the African Americans (45.0%) and fewer than a quarter (24.3%) of the Caribbean blacks who met the criteria received any form of MDD therapy. In addition, relative to whites, both black groups were more likely to rate their MDD as severe or very severe and more disabling. When MDD affects African Americans and Caribbean blacks, it is usually untreated and is more severe and disabling compared with that in non-Hispanic whites. The burden of mental disorders, especially depressive disorders, may be higher among US blacks than in US whites.

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Cultural adaptation into Spanish of the generalized anxiety disorder-7 (GAD-7) scale as a screening tool

Javier Garcia-Campayo, Enric Zamorano Bayarri, Miguel A Ruiz-Zárate … (2010)

Background Generalized anxiety disorder (GAD) is a prevalent mental health condition which is underestimated worldwide. This study carried out the cultural adaptation into Spanish of the 7-item self-administered GAD-7 scale, which is used to identify probable patients with GAD. Methods The adaptation was performed by an expert panel using a conceptual equivalence process, including forward and backward translations in duplicate. Content validity was assessed by interrater agreement. Criteria validity was explored using ROC curve analysis, and sensitivity, specificity, predictive positive value and negative value for different cut-off values were determined. Concurrent validity was also explored using the HAM-A, HADS, and WHO-DAS-II scales. Results The study sample consisted of 212 subjects (106 patients with GAD) with a mean age of 50.38 years (SD = 16.76). Average completion time was 2'30''. No items of the scale were left blank. Floor and ceiling effects were negligible. No patients with GAD had to be assisted to fill in the questionnaire. The scale was shown to be one-dimensional through factor analysis (explained variance = 72%). A cut-off point of 10 showed adequate values of sensitivity (86.8%) and specificity (93.4%), with AUC being statistically significant [AUC = 0.957-0.985); p 0.001). Limitations Elderly people, particularly those very old, may need some help to complete the scale. Conclusion After the cultural adaptation process, a Spanish version of the GAD-7 scale was obtained. The validity of its content and the relevance and adequacy of items in the Spanish cultural context were confirmed.

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Journal

Title: Disability and Rehabilitation

Abbreviated Title: Disability and Rehabilitation

Publisher: Informa UK Limited

ISSN (Print): 0963-8288

ISSN (Electronic): 1464-5165

Publication date Created: October 14 2016

Publication date (Print): November 07 2016

Volume: 39

Issue: 23

Pages: 2347-2380

Article

DOI: 10.1080/09638288.2016.1223177

PubMed ID: 27820966

SO-VID: 612cf218-b815-4c1f-a58d-fe92859ed89a

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World Health Organization disability assessment schedule 2.0: An international systematic review

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Most cited references 650

The disablement process

Prevalence and distribution of major depressive disorder in African Americans, Caribbean blacks, and non-Hispanic whites: results from the National Survey of American Life.

Cultural adaptation into Spanish of the generalized anxiety disorder-7 (GAD-7) scale as a screening tool

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