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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 withdrawn into myself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]