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Table 4 Test–retest Reliability: QPE Subscales administered more than 14 days apart

From: The Arabic Questionnaire for Psychotic Experiences in patients with psychotic disorders: a clinical validation

QPE Subscales

Frequency in the 2nd session

Frequency in the 3rd session

Kendall’s Tau correlation

p-value

Interclass Correlation

ICC[95%CI]

p-value

Auditory Hallucinations

L

25 (67.6%)

21 (56.8%)

0.68

 < 0.0001

0.81 [.63-.90]

 < 0.0001

C

10 (27%)

10(27%)

0.60

 < 0.0001

0.84[.69-.92]

 < 0.0001

Visual Hallucinations

L

11 (29.7%)

8 (21.6%)

0.52

0.002

0.68[.38-.84]

 < 0.0001

C

1 (2.7%)

0(0%)

-

-

-

-

Tactile Hallucinations

L

12 (32.4%)

9 (24.3%)

0.56

0.000

0.71[.43 -.85]

 < 0.0001

C

3 (8.1%)

2(5.4%)

0.91

0.823

0.53[.09-.76]

0.013

Olfactory Hallucinations

L

8 (21.6%)

6 (16.2%)

0.84

 < 0.0001

0.91[.83-.95]

 < 0.0001

C

0(0%)

0(0%)

-

-

-

-

Sensed Hallucinations

L

11 (29.7%)

8 (21.6%)

0.81

 < 0.0001

0.89[0.79–0.94]

 < 0.0001

C

6 (16.2%)

3(8.1%)

0.68

 < 0.0001

0.79[0.58–0.89]

 < 0.0001

Delusions

L

26(70.3%)

21(56.8%)

0.77

 < 0.0001

0.85[0.71–0.92]

 < 0.0001

C

11(29.7%)

11(29.7%)

0.61

 < 0.0001

0.76[0.53–0.88]

 < 0.0001

GAF Score (M(SD))

 

64.65 (24.99)

71.28 (21.02)

0.58

 < 0.0001

0.73[0.47–0.86]

 < 0.0001

  1. Abbreviations: QPE Questionnaire for Psychotic Experiences, L Lifetime prevalence, C Current prevalence, GAF Global Assessment of Function, M Mean, SD Standard deviation, N = 37