Kang 2009

Methods	RCT
Participants	Study took place in Korea 16 participants: 8 intervention, 8 control Inclusion criteria: left hemiplegia after stroke, Mini Mental State Examination score of > 18/30 and Motor Free Visual Perception Test standard score < 109 Exclusion criteria: significant multiple small lacunar infarct, significantly decreased visual acuity or visual impairment from diabetic retinopathy or senile cataract, hearing difficulty or cranial nerve dysfunction Mean (SD) age: intervention group 60 (11) years, control group 63 (10) years Timing post stroke: intervention group mean (SD) 64 (37) days, control group 58 (30) days
Interventions	Virtual reality intervention: participants were seated and participated in visual spatial and motor tasks using their unaffected arm. Software recognised and displayed the movements of the hand through a camera and displayed the images on a computer screen Control intervention: training using the PSS CogRehab program Sessions were 30 minutes, 3 times per week for 4 weeks (6 hours total)
Outcomes	Outcomes recorded at baseline and post‐intervention Cognitive outcome measures: Mini Mental State Examination Activity limitation outcomes: Modified Barthel Index Other outcome measures: motor free visual perception test, interest in performing the task
Notes	—
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Random allocation using block randomisation process. Envelopes were shuffled and the participant drew 1 after enrolment
Allocation concealment (selection bias)	Unclear risk	Whether the envelopes were opaque is unclear
Blinding of outcome assessment (detection bias) All outcomes	Low risk	Blind
Incomplete outcome data (attrition bias) All outcomes	Low risk	There does not appear to be any attrition and all outcome measures appear to be reported in full
Selective reporting (reporting bias)	Unclear risk	Unclear ‐ not privy to protocol