Table 3 Fit statistics and Cronbach’s alpha of the dimensions of the COS-CRC
Dimensions (number of items) | CLR-χ2(a) | Degrees of freedom | P | Cronbach’s alpha |
|---|---|---|---|---|
Part I | ||||
Sense of dejection (6) | 33.1 | 17 | 0.011 | 0.923 |
Anxiety (7) | 16.9 | 20 | 0.661 | 0.920 |
Behaviour (7) | 15.7 | 20 | 0.736 | 0.905 |
Sleep (4) | 15.1 | 11 | 0.178 | 0.894 |
Introvert (5) | 37.5 | 17 | 0.003* | 0.886 |
Introvert (4) after deletion of item 26 | 6.3 | 14 | 0.959 | 0.876 |
Change in body perception (3) | 2.4 | 8 | 0.965 | 0.900 |
Fear & Powerlessness (4) | 5.0 | 11 | 0.933 | 0.892 |
Change in perception of own age (2) | 0.5 | 5 | 0.994 | 0.788 |
Emotional reactions (3) | 10.1 | 8 | 0.260 | 0.797 |
Emotional reactions (2) after deletion of item 41 | 0.0 | 4 | 1.000 | 0.873 |
Emotional reactions with item 41 split for diagnosis | 17.1 | 22 | 0.757 | 0.797 |
Life-style changes (2) | 0.4 | 5 | 0.996 | 0.741 |
Sexuality (2) | 31.6 | 5 | 0.000* | 0.906 |
Part Ix | ||||
Perceived burden of bowel preparation (7) | 18.3 | 20 | 0.564 | 0.886 |
Perceived burden of bowel preparation (6) after deletion of item 53 | 19.6 | 17 | 0.295 | 0.891 |
Knowledge of having colorectal polyps (2) | 1.8 | 5 | 0.879 | 0.890 |
Negative colonoscopy experiences (9) | 30.6 | 26 | 0.245 | 0.896 |
Negative physical colonoscopy experiences (3) | 3.9 | 8 | 0.867 | 0.892 |
Negative emotional colonoscopy experiences (5) | 13.3 | 14 | 0.502 | 0.918 |
Part II | ||||
Social relations (3) | 0.8 | 5 | 0.978 | 0.808 |
Relaxed/calm (3) | 0.0 | 5 | 1.000 | 0.733 |
Impulsivity (6) | 5.0 | 11 | 0.934 | 0.887 |
Existential values (6) | 6.4 | 11 | 0.846 | 0.863 |
Existential values (5) after deletion of item 11 | 18.3 | 9 | 0.032 | 0.851 |
Existential values (6) with item 11 split for age | 11.0 | 15 | 0.750 | 0.863 |
Existential values (6) super item 10 and 11 | 7.5 | 14 | 0.914 | 0.863 |
Empathy (3) | 12.4 | 5 | 0.029 | 0.833 |