Article

Journal of Behavioral Medicine

, Volume 27, Issue 2, pp 167-183

First online:

Psychometric Evaluation of the Pain Anxiety Symptoms Scale (PASS) in Chronic Pain Patients

  • Jeffrey RoelofsAffiliated withDepartment of Medical, Clinical and Experimental Psychology, Maastricht University Email author 
  • , Lance McCrackenAffiliated withPain Management Unit, Royal National Hospital for Rheumatic Disease and, University of Bath
  • , Madelon L. PetersAffiliated withDepartment of Medical, Clinical and Experimental Psychology, Maastricht University
  • , Geert CrombezAffiliated withFaculty of Psychology and Educational Sciences, Ghent University
  • , Gerard van BreukelenAffiliated withDepartment of Methodology and Statistics, Maastricht University
  • , Johan W. S. VlaeyenAffiliated withDepartment of Medical, Clinical and Experimental Psychology, Maastricht University

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access

Abstract

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.

Pain Anxiety Symptoms Scale (PASS) PASS-20 reliability validity