Psychometric Evaluation of the Pain Anxiety Symptoms Scale (PASS) in Chronic Pain Patients
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This study examined psychometric properties of the Pain Anxiety Symptoms Scale (PASS), a measure of pain-related fear. A recently developed shortened version of the PASS, the PASS-20, was also investigated. Previously reported factor structures of the PASS were tested by means of confirmatory factor analysis. Results indicated that all models fitted adequately but that a five-factor solution fitted slightly better compared to the other models tested. The four-factor solution of the PASS-20 was tested by means of confirmatory factor analysis and results indicated adequate fit. Moreover, the four-factor solution of the PASS-20 was invariant among fibromyalgia and low-back pain patients. Convergent validity of the original PASS and the PASS-20 was good and internal consistency reliability adequate to excellent. The suitability of the original PASS and the PASS-20 are discussed and directions for future research are provided.
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- Psychometric Evaluation of the Pain Anxiety Symptoms Scale (PASS) in Chronic Pain Patients
Journal of Behavioral Medicine
Volume 27, Issue 2 , pp 167-183
- Cover Date
- Print ISSN
- Online ISSN
- Kluwer Academic Publishers-Plenum Publishers
- Additional Links
- Pain Anxiety Symptoms Scale (PASS)
- Author Affiliations
- 1. Department of Medical, Clinical and Experimental Psychology, Maastricht University, P.O. Box 616, 6200 MD, Maastricht, The Netherlands
- 2. Pain Management Unit, Royal National Hospital for Rheumatic Disease and, University of Bath, Bath, United Kingdom
- 3. Faculty of Psychology and Educational Sciences, Ghent University, Ghent, Belgium
- 4. Department of Methodology and Statistics, Maastricht University, Maastricht, The Netherlands