Table 2.

Models and devices of virtual reality systems in the included studies.

Variable		Value (N=25), n (%)	References
VRa models
	Nonimmersive VR	22 (88)	[35-48,50-56,59]
	Immersive VR	2 (8)	[57,58]
	Augmented reality	1 (4)	[49]
VR device
	Nintendo Wii	7 (28)	[35,42-44,50,52,53]
	Xbox Kinect	6 (24)	[36,37,39-41,54]
	Self-built VR	9 (36)	[38,45-48,51,57-59]
	UINCARE Home+	1 (4)	[49]
	IREX system	2 (8)	[55,56]

^aVR: virtual reality.