Abstract
The World Health Organization Disability Assessment Schedule (WHO DAS II) is a new
measure of disability based on the ICIDH-2 model of functioning and disability. This
study evaluates the measurement properties of the WHO DAS II in two disorders commonly
encountered in the primary care setting. Seventy-three patients with depression and
76 patients with back pain were interviewed at baseline and after 3 months of usual
primary care. Internal validity, convergent validity, and responsiveness to change
of the WHO DAS II were evaluated. The WHO DAS II had excellent internal validity and
convergent validity in the primary care setting. The responsiveness to change of the
WHO DAS II was comparable to that of the SF-36. The WHO DAS II appears to be a useful
health status instrument for measuring the disability associated with both physical
and mental disorders in the primary care setting. This instrument facilitates the
use of the ICIDH-2 as a framework for evaluating activity limitations and participation.
Keywords
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Article info
Publication history
Accepted:
January 17,
2003
Received in revised form:
November 15,
2002
Received:
October 25,
2001
Identification
Copyright
© 2003 Elsevier Inc. Published by Elsevier Inc. All rights reserved.
