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.