Effect of virtual reality exposure therapy on social participation in people with a psychotic disorder (VRETp): study protocol for a randomized controlled trial

Table 1 Measurement objectives

Outcome	Measurement	T0	T1	T2	T3	T6
Outcome	Interview (i) Self-report (s)	Baseline	Session 4	Session 8	Posttreatment	Follow-up
Social participation	Experience Sampling Method (s)	x			x	x
Paranoia	GPTS (s)	x	x	x	x	x
Interaction anxiety	SIAS (s)	x	x	x	x	x
Depression	BDI-II (s)	x			x	x
Stigma	ISMI (s)	x			x	x
Schemas	BCSS (s)	x			x	x
Safety behavior	SBQ (i)	x			x	x
Cognitive biases	DACOBS (s)	x			x	x
Social functioning	SOFAS (i)	x			x	x
Quality of life	MANSA (i)	x			x	x
Cost-effectiveness	TIC-P (i)	x			x	x
Cyber sickness	SSQ (s)		x	x
Presence	IPQ (s)		x	x
Medication adherence	BARS (i)	x	x	x	x	x

GPTS Green et al. Paranoid Thought Scales, SIAS Social Interaction Anxiety Scale, BDI-II Beck Depression Inventory, ISMI Internalized Stigma of Mental Illness, BCSS Brief Core Schema Scales, SBQ Safety Behavior Questionnaire – persecutory delusions, DACOBS Davos Assessment of Cognitive Biases Scale, SOFAS Social and Occupational Functioning Assessment Scale, MANSA Manchester Short Assessment of quality of life, TiC-P Trimbos/iMTA questionnaire for Costs associated with Psychiatric illness, SSQ Simulator Sickness Questionnaire, IPQ Igroup Presence Questionnaire, BARS Brief Adherence Rating Scale

ISSN: 1745-6215