Validity and reliability of cognitive assessment using virtual environment technology in patients with stroke.
OBJECTIVE
We assessed the validity and reliability of a virtual environment technology (VET)-based cognitive assessment program that was developed as a measurement tool of cognitive abilities in patients after a stroke.


METHODS
Twenty participants diagnosed with stroke caused by unilateral brain lesions were enrolled to assess the VET program's validity and test-retest reliability. Participants underwent evaluation by paper-based neuropsychological tests including the Korean Mini-Mental Status Examination, the Korean-Wechsler Adult Intelligence Scale, the Motor Free Visual Perception Test, Rey-Kim Memory Test, and Kim's Frontal-Executive Neuropsychologic Test as well as the VET-based cognitive assessment. Major variables and indices of the VET program were calculated. The VET program validity was evaluated using a simple correlation analysis between variables from the VET program and conventional paper-based neuropsychological measurements, and the reliability was evaluated by investigating the test-retest correlation coefficients.


RESULTS
Major variables and indices of the VET program in patients with stroke correlated significantly with the related scores of paper-based neuropsychological tests. In addition, the test-retest reliability analysis revealed that the correlation coefficients ranged from 0.528 to 0.926.


CONCLUSIONS
The VET-based cognitive assessment program showed adequate reliability and validity as a method of cognitive assessment in patients after stroke.
Ku
Jeonghun
J
Department of Biomedical Engineering, The Graduate School, Yonsei University, Seoul, Korea.
Lee
Jang Han
JH
Han
Kiwan
K
Kim
Sun I
SI
Kang
Youn Joo
YJ
Park
Eun Sook
ES
D000203:Activities of Daily Living; D000328:Adult; D000368:Aged; D003072:Cognition Disorders / Q000175:diagnosis* / Q000209:etiology; D004185:Disability Evaluation; D006801:Humans; D008875:Middle Aged; D009483:Neuropsychological Tests; D020521:Stroke / Q000150:complications; D014584:User-Computer Interface