The factor structure of the Revised Illness Perception Questionnaire (IPQ-R) in end-stage renal disease patients.
The purpose of this study was to examine the factor structure of the Revised Illness Perceptions Questionnaire (IPQ-R) in a sample of 374 end-stage renal disease (ESRD) patients. A confirmatory factor analysis of the IPQ-R, including the illness identity subscale, demonstrated adequate model fit for the factor structure as originally defined by (Moss-Morris, R., Weinman, J., Petrie, K. J., Horne, R., Cameron, L. D., & Buick, D. (2002). The revised Illness Perception Questionnaire (IPQ-R). Psychology & Health, 17 (1), 1-16.) Modifying the a-priori IPQ-R factor structure by removing two items with low factor loadings and specifying a path between personal control and item 23 had marginally better fit. A separate exploratory factor analysis of the causal items indicated three factors relating to Biological, Psychological and Behavioural causes. These findings provide evidence towards the validity and reliability of the IPQ-R as a suitable measure of illness perceptions in the context of ESRD.
School of Psychology, University of Hertfordshire, Hatfield, UK. j.chilcot@herts.ac.uk
Joseph
J
Chilcot
Sam
S
Norton
David
D
Wellsted
Ken
K
Farrington
D000223:Adaptation, Psychological; D001294:Attitude to Health; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D007676:Kidney Failure, Chronic / Q000523:psychology* / Q000628:therapy; D008297:Male; D008875:Middle Aged; D008960:Models, Psychological; D011594:Psychometrics; D006435:Renal Dialysis; D011795:Surveys and Questionnaires; D006113:United Kingdom