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Table 4 Summary of result from the psychometric analyses of part 1 of the COS-CC

From: Consequences of screening in cervical cancer: development and dimensionality of a questionnaire

The items of part I of the COS-CC in order of appearance in the questionnaire Subscales and misfit Observed Expected Gamma sd Probability of fit to the Rasch model Item difficulty Single or ‘poor’ item
1. worried Dejection 0.654 0.723 0.036 0.05612 −1.12  
2. worried about my future Anxiety 0.678 0.691 0.038 0.74067 −0.65  
3. scared Anxiety 0.751 0.685 0.043 0.12738 0.05  
4. irritable Behavioural 0.616 0.761 0.035 0.00004b − 0.39  
5. quieter than normal Behavioural 0.783 0.742 0.040 0.30285 0.32  
6. slept badly Sleep 0.823 0.800 0.035 0.51521 −0.29  
7. busy to take mind off things Single item NA NA NA NA NA single item
8. hard to concentrate Behavioural 0.793 0.748 0.038 0.23658 0.08  
9. time passed slowly Dejection 0.690 0.730 0.047 0.40140 0.06  
10. change in appetite Behavioural 0.750 0.738 0.045 0.78002 0.07  
11. sad Dejection 0.771 0.708 0.038 0.10405 −0.50  
12. restless Anxiety 0.597 0.690 0.041 0.02456a − 0.23  
13. nervous Anxiety 0.572 0.678 0.048 0.02701a 0.50  
14. upset Anxiety 0.758 0.686 0.040 0.06831 −0.29  
15. uneasy Dejection 0.734 0.701 0.041 0.41964 0.12  
16. taken long time to fall asleep Sleep 0.766 0.785 0.037 0.60991 0.09  
17. withdrawn into myself Behavioural 0.765 0.733 0.045 0.47122 0.15  
18. unable to cope Dejection 0.762 0.714 0.054 0.37715 0.73  
19. depressed Dejection 0.721 0.704 0.054 0.76003 0.95  
20. difficulty dealing work or other commitments Behavioural 0.780 0.731 0.046 0.29645 0.23  
21. woken up far too early in the morning Sleep 0.712 0.777 0.039 0.09015 0.02  
22. difficulty doing things around the house Behavioural 0.771 0.730 0.047 0.37679 0.26  
23. terrified Anxiety 0.874 0.691 0.072 0.01101a 0.77  
24. awake most of the night Sleep 0.910 0.764 0.057 0.01040a 1.37  
25. shocked Anxiety 0.702 0.687 0.050 0.76485 0.34  
26. felt unsafe Single item NA NA NA NA NA ‘poor’ item
27. felt sorry for myself Single item NA NA NA NA NA ‘poor’ item
28. have considered going to my doctor Single item NA NA NA NA NA ‘poor’ item
29. thought one’s situation hopeless Single item NA NA NA NA NA ‘poor’ item
30. experienced mood swings Single item NA NA NA NA NA ‘poor’ item
31. more tired than usual Single item NA NA NA NA NA ‘poor’ item
32. keeping things from those who are close to you Single item NA NA NA NA NA ‘poor’ item
33. Sick leave Single item NA NA NA NA NA single item
34. Self-rated health Single item NA NA NA NA NA single item
35. the screening result has made me uncertain Uncertainty about the screening result 0.714 0.657 0.045 0.20824   
36. as if there is something wrong with my body Change in body perception 0.868 0.835 0.029 0.25147 −0.36  
37. experienced that I lost control Fear and powerlessness 0.519 0.608 0.064 0.16434 1.07  
38. thought my body was vulnerable Change in body perception 0.780 0.835 0.029 0.05896 −0.23  
39. my own fault Guilt 0.839 0.761 0.045 0.08363 0.28  
40. aware of feeling something different in my lower abdomen Single item NA NA NA NA NA ‘poor’ item
41. afraid that I cannot get pregnant Uncertainty about future pregnancy 0.873 0.844 0.026 0.25934 −0.75  
42. thoughts about the ability to become a mother Uncertainty about future pregnancy 0.880 0.848 0.026 0.22174 −0.37  
43. as if it sits in my body Change in body perception 0.819 0.832 0.031 0.67645 0.15  
44. felt older than my age Misfit (Change in body perception) 0.521 0.747 0.045 < 0.000005b   
44. felt older than my age Change in perception of own age 0.791 0.790 0.054 0.98406 −0.06  
45. unpleasant examination(s) Negative experiences from the pelvic examination 0.828 0.785 0.029 0.14511 −0.60  
46. hard to trust that the screening result is true Misfit (Uncertainty about the screening result) 0.341 0.544 0.057 0.00037b NA ‘poor’ item
47. felt ill Single item NA NA NA NA NA ‘poor’ item
48. experienced that my body was a machine that does not work Change in body perception 0.870 0.829 0.035 0.24821 0.56  
49. afraid that I would lose the baby if I got pregnant Uncertainty about future pregnancy 0.760 0.837 0.036 0.02991 1.57  
50. felt sour (attitude) Emotional reactions 0.906 0.906 0.029 0.99996   
51. angry Emotional reactions 0.906 0.906 0.029 0.99996   
52. wondered if I should have taken better care of myself Guilt 0.792 0.775 0.042 0.69616 −0.49  
53. Confused about what the screening result means Uncertainty about the screening result 0.639 0.652 0.043 0.75952   
54. felt an emptiness Single item NA NA NA NA NA ‘poor’ item
55. Felt that my body was not my own body Change in body perception 0.849 0.822 0.040 0.50265 0.93  
56. felt defenseless at the examination bed Negative experiences from the pelvic examination 0.829 0.772 0.035 0.10738 0.38  
57. felt older than my age Misfit (Change in body perception) 0.621 0.794 0.040 0.00002b   
57. felt older than my age Change in perception of own age 0.791 0.790 0.054 0.98406 0.21  
58. felt vulnerable at the examination bed Negative experiences from the pelvic examination 0.767 0.783 0.031 0.60707 0.00  
59. felt powerless Fear and powerlessness 0.702 0.598 0.052 0.04647 0.66  
60. The idea that may be I am unable to have children has made me unhappy Single item NA NA NA NA NA ‘poor’ item
61. surprised that something was wrong Uncertainty about the screening result 0.642 0.677 0.042 0.41331   
62. frightened Emotional reactions 0.587 0.685 0.048 0.04082a NA ‘poor’ item
63. cried more than usual Emotional reactions 0.783 0.717 0.054 0.03860a NA ‘poor’ item
64. felt humiliated at the examination bed Negative experiences from the pelvic examination 0.772 0.768 0.038 0.92520 0.55  
65. felt that the examinations were painful Negative experiences from the pelvic examination 0.776 0.776 0.034 0.99270 0.14  
66. felt that I had to overstepped my bounds at the examination bed Negative experiences from the pelvic examination 0.779 0.778 0.033 0.97687 0.15  
67. felt I was unlucky Fear and powerlessness 0.595 0.617 0.045 0.62384 −0.27  
68. fear of cervical cancer at the back of one’s mind Fear and powerlessness 0.661 0.629 0.044 0.46986 −0.86  
69. been afraid to infect a partner Guilt 0.590 0.719 0.064 0.04317 0.36  
70. felt that the examinations has been a tough experience Negative experiences from the pelvic examination 0.658 0.770 0.042 0.00708a 0.61  
71. less interest in sex Sexuality 0.764 0.768 0.045 0.92867 −0.37  
72. The idea of being with a partner again has been unpleasant Sexuality 0.876 0.769 0.061 0.07887a 0.43  
73. had painful intercourse Sexuality 0.716 0.774 0.048 0.22501 −0.23  
74. felt sting during intercourse Sexuality 0.736 0.788 0.051 0.30588 −0.25  
75. had vaginal dryness Sexuality 0.598 0.763 0.049 0.00075 0.06  
76. The idea of intercourse has been repulsive Sexuality 0.846 0.764 0.067 0.21977 0.73  
77. negative impact on my sex life Sexuality 0.925 0.780 0.049 0.00288a − 0.13  
  1. aAdjusting the p-values in the table in order to control the false discovery rate and so avoid spurious significant results due to multiple testing suggested that this result should be regarded as insignificant [23]
  2. bMisfit after a correction of Benjamini-Hochberg procedure [23]