The Construct Validity of the Illness Cognition Questionnaire: The Robustness of the Three-factor Structure Across Patients with Chronic Pain and Chronic Fatigue

  • Emelien Lauwerier
  • Geert Crombez
  • Stefaan Van Damme
  • Liesbet Goubert
  • Dirk Vogelaers
  • Andrea W. M. Evers
Article

DOI: 10.1007/s12529-009-9059-z

Cite this article as:
Lauwerier, E., Crombez, G., Van Damme, S. et al. Int.J. Behav. Med. (2010) 17: 90. doi:10.1007/s12529-009-9059-z

Abstract

Background

The Illness Cognition Questionnaire (ICQ; Evers et al., J Consult Clin Psychol, 69:1026-1036, 2001) assesses three ways of cognitively evaluating the stressful and aversive character of a chronic illness: helplessness, acceptance, and perceived benefits.

Purpose

The purpose of this study was to evaluate the construct validity of the ICQ in individuals with chronic pain and patients with chronic fatigue.

Method

The ICQ was administered to 821 individuals with chronic pain and 295 patients with chronic fatigue. Confirmatory factor analyses were performed to assess the hypothesized three-factor structure, containing the factors “helplessness,” “acceptance,” and “perceived benefits.” A multigroup analysis was performed to investigate the stability of the factor structure in both groups.

Results

Results confirmed the three-factor structure in the two samples. The factor structure was invariant across individuals with chronic pain and chronic fatigue.

Conclusion

As the three-factor structure provided a good fit in both groups, we confirm the usefulness of the subscale scores in research and clinical practice.

Keywords

Chronic painChronic fatigueFactor structureIllness Cognition Questionnaire (ICQ)

Copyright information

© International Society of Behavioral Medicine 2009

Authors and Affiliations

  • Emelien Lauwerier
    • 1
  • Geert Crombez
    • 1
  • Stefaan Van Damme
    • 1
  • Liesbet Goubert
    • 1
  • Dirk Vogelaers
    • 2
  • Andrea W. M. Evers
    • 3
  1. 1.Department of Experimental–Clinical and Health PsychologyGhent UniversityGhentBelgium
  2. 2.General Internal Medicine and Infectious DiseasesGhent University HospitalGhentBelgium
  3. 3.Department of Medical PsychologyUniversity of NijmegenNijmegenthe Netherlands