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. 2019 Feb 1;45(Suppl 1):S78–S87. doi: 10.1093/schbul/sby148

Table 4.

Reliability Assessments

Stability and Equivalence
QPE Subscales Stability (Test–Retest) N = 16 Equivalence (Inter-rater) N = 16
AH 0.88 0.99
VH 0.92a 1.00
TotH 0.82 1.00
D 0.70 1.00
QPE 0.81 1.00
Internal Consistency b and Inter-subscale Correlations
AH VH TotH D QPE
AH L 0.78
C 0.70
VH L 0.07 L 0.86
C 0.29 C 0.75
TotH L 0.48** L 0.60** L 0.75
C 0.75** C 0.55** C 0.76
D L 0.51** L 0.10 L 0.58** L 0.90
C 0.39** C 0.14 C 0.55** C 0.89
QPE L 0.55** L 0.47** L 0.79** L 0.58** L 0.85
C 0.71** C 0.46** C 0.82** C 0.55** C 0.86

Note: AH, auditory hallucination total score; VH, visual hallucination total score; TotH, total hallucinations; D, delusions; QPE, total severity psychotic experiences on the Questionnaire for Psychotic Experiences; L, lifetime; C, current.

aReduced sample of 14 (see “Methods” section).

bInternal consistency is represented in bold on the diagonal and are reported as Cronbach’s α. Inter-subscale correlations ** significant at 0.001 using Kendall’s Tau.