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Table 3 Results of confirmatory factor analysis of the modified final measurement model (Model 2c: 34 items, 2 error covariances, item 6 respecified) of the Turkish IPQ-R part II

From: The factor structure of the Turkish version of the Revised Illness Perception Questionnaire (IPQ-R) in patients with diabetes and cardiovascular disease

Factors and items λ SE ρ
Timeline acute/chronic    0.92
 1: My illness will last a short time 0.92** 0.03  
 2: My illness is likely to be permanent rather than temporary 0.95** 0.02  
 3: My illness will last a long time 0.96** 0.02  
 4: This illness will pass quickly 0.89** 0.04  
 5: I expect to have this illness for the rest of my life 0.96** 0.02  
 18: My illness will improve in time 0.76** 0.05  
 6: My illness is a serious condition 0.63** 0.06  
Consequences    0.81
 7: My illness has major consequences on my life 0.58** 0.06  
 8: My illness does not have much effect on my life 0.49** 0.06  
 9: My illness strongly affects the way other see me 0.61** 0.05  
 10: My illness has serious financial consequences 0.71** 0.05  
 11: My illness causes difficulties for those who are close to me 0.79** 0.04  
Personal Control    0.82
 12: There is a lot I can do to control my illness 0.57** 0.07  
 13: What I do can determine whether my illness gets better or worse 0.84** 0.05  
 14: The course of my illness depends on me 0.77** 0.07  
 15: Nothing I do will affect my illness 0.55** 0.09  
 16: I have the power to influence my illness 0.82** 0.06  
Treatment Control    0.63
 21: The negative effects of my illness can be prevented by my treatment 0.63** 0.18  
 22: Treatment can control my illness 0.56* 0.22  
 23: There is nothing that can help my illness 0.48** 0.14  
Illness Coherence    0.91
 24: The symptoms of my illness are puzzling to me 0.61** 0.06  
 25: My illness has no meaning to me 0.87** 0.03  
 26: I don’t understand my illness 0.90** 0.03  
 27: My illness doesn’t make any sense to me 0.90** 0.03  
 28: I have a clear picture or understanding of my illness 0.85** 0.04  
Timeline cyclical    0.61
 29: The symptoms of my illness change from day to day 0.49** 0.06  
 30: My symptoms come and go in cycles 0.63** 0.09  
 32: I go through cycles in which my illness gets better and worse 0.87** 0.09  
Emotional representations    0.94
 33: I get depressed when I think about my illness 0.88** 0.03  
 34: When I think about my illness I get upset 0.90** 0.02  
 35: My illness makes me feel angry 0.58** 0.05  
 36: My illness does not worry me 0.86** 0.03  
 37: My illness makes me feel anxious 0.95** 0.01  
 38: My illness makes me feel afraid 0.89** 0.02  
Error covariance between items 33 and 34 0.69** 0.09  
Error covariance between items 7 and 8 0.82** 0.04  
  1. Completely standardized factor loadings, standard errors, composite reliabilities and error covariances; n = 302; Note. λ: completely standardized factor loading; SE: standard error; ρ: composite reliability; *p < 0.01, **p < 0.001.