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Table 1 Reliability of the 29 initial probe items of the HPQ (N = 45).

From: Development, reliability and factor analysis of a self-administered questionnaire which originates from the World Health Organization's Composite International Diagnostic Interview – Short Form (CIDI-SF) for assessing mental disorders

Content Item Weighted Cohen's kappa
1. Thinking to have a severe physical disease 0.75
2. Restlessness 0.64
3. Feeling tired 0.54
4. Trouble with sleep 0.62
5. Trouble concentrating 0.73
6. Feeling worthless 0.59
7. Thoughts about death 0.76
8. Sense of guilt 0.58
9. Hopelessness 0.64
10. Change in weight (lost weight) 0.84
11. Change in weight (gained weight) 0.93
12. Feeling sad, blue, or depressed 0.78
13. Loss of interest 0.56
14. Being too thin and to eat too little or do too exercise to lose weight 0.79
15. Eating a large amount of food and then doing something to not gain weight 0.93
16. Feeling worried, tense, or anxious 0.64
17. Having a strong fear about specific things 0.77
18. Having a strong fear about doing things in front of other people 0.67
19. Having a strong fear about being in a crowd, away from home alone, etc. 0.58
20. All of a sudden feeling frightened, anxious, uneasy 0.60
21. Number of glass of wine, or tins of beer (average in any single day) 0.79
22. Number of shots of liquor, or bitter, etc. (average in any single day) 0.82
23. Using psychotropic drugs 0.74
24. Being excessively happy, high spirited, thrilled, self-confident 0.64
25. Doing something over and over again or repeating gestures in a same order 0.38
26. Having unpleasant, exaggerated, unreasonable thoughts 0.70
27. Hearing voices 1.00
28. Feeling that own thoughts are controlled by some outside force 0.95
29. Feeling that some people are plotting or harming 0.58