Table 1.

The description of populations, interventions, comparators, outcomes, and study designs (PICOS) used in this review.

Population	Intervention	Comparison	Outcome	Study designs
Patients with OCD Any ages	Virtual reality (VR)	–	VR scoring (break in time, break in choice, break in social rules, divided attention, self-correction, and preservation) OCD symptoms (anxiety, disgust, urge to wash, checking time, number of checking behavior, and uncertainty)	Original articles comparing and studying VR technology in patients with OCD against the control (case–control)