✦ LIBER ✦

Examining item bias in the anxiety subscale of the Hospital Anxiety and Depression Scale in patients with chronic obstructive pulmonary disease

✍ Scribed by Wai-Kwong Tang; Eric Wong; Helen F. K. Chiu; C. M. Lum; Gabor S. Ungvari

Publisher: John Wiley and Sons
Year: 2008
Tongue: English
Weight: 124 KB
Volume: 17
Category: Article
ISSN: 1049-8931
DOI: 10.1002/mpr.234

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The Hospital Anxiety and Depression Scale (HADS) is a widely used screening instrument for depression and anxiety in medically compromised patients. The purpose of this study was to examine the differential item functioning (DIF) of the anxiety subscale of the HADA (HADS‐A). A research assistant administered the HADS‐A to 166 Chinese patients with chronic obstructive pulmonary disease (COPD) who were consecutively admitted to a rehabilitation hospital. Although the HADS‐A was overall uni‐dimensional, there were one mute item and two items with borderline misfit. Only one item had a DIF for arterial oxygen saturation. No item had DIF for other indicators of the severity of COPD. In conclusion, this study found that for one item the HADS‐A has significant item bias for the severity of disease in patients with COPD. Copyright © 2008 John Wiley & Sons, Ltd.

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