Lee 2013.

Methods	RCT
Participants	Recruited from inpatients at a hospital in Seoul 22 Participants: 12 intervention group, 10 control group Inclusion criteria: > 6 months after stroke; could sit independently for ≥ 30 min, who had a MMSE‐K score of > 21 points, who had not participated in any balance training program during the previous 6 months, who had no orthopedic problems, such as a fracture, deformity, or severe osteoarthritis, and who were not taking any drugs for balance maintenance were included Exclusion criteria: failure to meet above criteria Mean (SD) age: intervention group 60.6 (8.8) years, control group 63.7 (4.7) years 27% men
Interventions	VR intervention: Visual Feedback Training (VFT) was performed individually in a dedicated room containing the required equipment. VFT was performed using BIORescue (RM INGENIERIE, Rodez, France) equipment, which consists of a computer, a monitor, and a force plate. This force plate detects the posture and movements made by participants and this information is transferred to the computer, and processed for display on the monitor. This system encourages adoption of the correct posture by providing visual feedback and allows for design of customised exercise programs based on pre‐test data. The system also allows different exercise times and intensities for selected games, and within‐session variable rest times. In the study, the participants sat 1 m‐1.5 m away from the monitor on a pressure platform. Four types of exercise were performed during each session. The first exercise was training for stability and weight shift by balancing the amount of water in a flask. The second was training for stability and weight shift by driving a vehicle. The third exercise was skiing, which involved shifting the body in the anterior, posterior, left, and right directions in three‐dimensional space; and the fourth exercise used a memory recall program, during which the participant had to remember 4 pictures and to match the picture Control intervention: general physical therapy Both groups received general physical therapy. In addition, those in the intervention group received additional 30‐min sessions, 5 d/week for 4 weeks
Outcomes	Outcomes assessed following intervention Static balance measured using the Good Balance System Balance: Functional Reach Test Visual perception: Motor Free Visual Perception Test
Notes	—
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Random allocation software
Allocation concealment (selection bias)	Unclear risk	Not described
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	Not described
Incomplete outcome data (attrition bias) All outcomes	High risk	Some dropouts but details of this and method for dealing with this not described
Selective reporting (reporting bias)	Unclear risk	Protocol or clinical trial register not mentioned