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Table 1 Four-Dimensional Symptom Questionnaire (4DSQ): items, scale, and factor loadings (confirmatory factor analysis, test-set)

From: The Four-Dimensional Symptom Questionnaire (4DSQ): a validation study of a multidimensional self-report questionnaire to assess distress, depression, anxiety and somatization

During the past week, did you suffer from:   
1. dizziness or feeling light-headed? Som 0.51
2. painful muscles? Som 0.44
3. fainting? Som 0.21
4. neck pain? Som 0.40
5. back pain? Som 0.37
6. excessive perspiration? Som 0.42
7. palpitations? Som 0.61
8. headache? Som 0.30
9. a bloated feeling in the abdomen? Som 0.53
10. blurred vision or spots in front of your eyes? Som 0.51
11. shortness of breath? Som 0.63
12. nausea or an upset stomach? Som 0.47
13. pain in the abdomen or stomach area? Som 0.46
14. tingling in the fingers? Som 0.50
15. pressure or a tight feeling in the chest? Som 0.70
16. pain in the chest? Som 0.65
17. feeling down or depressed? Dis 0.66
18. sudden shock for no reason? Anx 0.52
19. worry? Dis 0.45
20. disturbed sleep? Dis 0.39
21. indefinable feelings of fear? Anx 0.74
22. listlessness? Dis 0.66
23. trembling when with other people? Anx 0.57
24. anxiety or panic attacks? Anx 0.79
During the past week, did you feel:   
25. tense? Dis 0.50
26. easily irritated? Dis 0.53
27. frightened? Anx 0.79
28. that everything is meaningless? Dep 0.75
29. that you just can't do anything anymore? Dis 0.76
30. that life is not worth while? Dep 0.86
31. that you can no longer take any interest in the people and things around you? Dis 0.71
32. that you can't cope anymore? Dis 0.80
33. that you would be better off if you were dead? Dep 0.79
34. that you can't enjoy anything anymore? Dep 0.70
35. that there is no escape from your situation? Dep 0.73
36. that you can't face it anymore? Dis 0.79
During the past week, did you:   
37. no longer feel like doing anything? Dis 0.79
38. have difficulty in thinking clearly? Dis 0.63
39. have difficulty in getting to sleep? Dis 0.41
40. have any fear of going out of the house alone? Anx 0.65
During the past week:   
41. did you easily become emotional? Dis 0.50
42. were you afraid of anything when there was really no need for you to be afraid? (for instance animals, heights, small rooms) Anx 0.64
43. were you afraid to travel on busses, trains or trams? Anx 0.59
44. were you afraid of becoming embarrassed when with other people? Anx 0.53
45. did you ever feel as if you were being threatened by unknown danger? Anx 0.54
46. did you ever think "If only I was dead"? Dep 0.77
47. did you ever have fleeting images of any upsetting event(s) that you have experienced? Dis 0.40
48. did you ever have to do your best to put aside thoughts about any upsetting event(s)? Dis 0.45
49. did you have to avoid certain places because they frightened you? Anx 0.63
50. did you have to repeat some actions a number of times before you could do something else? Anx 0.42
  1. Dis = Distress, Dep = Depression, Anx = Anxiety, Som = Somatization