Kwon 2012.

Methods	RCT
Participants	Recruited from a hospital in Korea 26 participants: 13 intervention, 13 control Inclusion criteria: adults within 3 months of stroke with the capacity to understand and follow simple instructions. Able to grasp and release affected hand, with manual muscle test ≥ grade 3. Able to maintain standing or sitting position independently and no visual deficit Exclusion criteria: failure to meet above criteria Mean (SD) age: intervention group 57.15 (15.42) years, control group 57.92 (12.32) years Timing post stroke: intervention group mean (SD) 24.69 (15.59) d, control group 23.92 (20.70) d
Interventions	VR intervention: conventional therapy plus additional therapy time using IREX Control intervention: conventional therapy alone Sessions were 30 min, 5 d/week for 4 weeks
Outcomes	Outcomes recorded at baseline and post‐intervention Upper limb function outcomes: Fugl Meyer, Manual Function Test Activity limitation outcomes: Korean Modified Barthel
Notes	—
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Not reported
Allocation concealment (selection bias)	Unclear risk	Not reported
Blinding of outcome assessment (detection bias) All outcomes	Low risk	Blinded to allocation
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	Not reported in adequate detail to make judgement
Selective reporting (reporting bias)	Unclear risk	Protocol not available