Journal
GENERAL HOSPITAL PSYCHIATRY
Volume 34, Issue 2, Pages 167-172Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.genhosppsych.2011.11.005
Keywords
Latent structure; Mokken scaling; Item response theory; Psychometric validation; Depression; Anxiety; Cardiovascular disease
Categories
Ask authors/readers for more resources
Objective: The Hospital Anxiety and Depression Scale (HADS) is a prolifically used scale of anxiety and depression. The original bidimensional anxiety-depression latent structure of the HADS has come under significant scrutiny, with previous studies revealing one-, two-, three- and four-dimensional structures. The current study examines the latent structure of the HADS using a non-parametric item response theory method. Method: Using data conglomerated from four independent studies of cardiovascular disease employing the HADS (n=893), Mokken scaling procedure was conducted to assess the latent structure of the HADS. Results: A single scale consisting of 12 of 14 HADS items was revealed, indicating a unidimensional latent HADS structure. Discussion: The HADS was initially intended to measure mutually exclusive levels of anxiety and depression; however, the current study indicates that a single dimension of general psychological distress is captured. (C) 2012 Elsevier Inc. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available