一种用于脑损伤康复中日常生活技能评估的虚拟现实环境：信度与效度

A virtual reality environment for evaluation of a daily living skill in brain injury rehabilitation: reliability and validity.

作者信息

Zhang Ling, Abreu Beatriz C, Seale Gary S, Masel Brent, Christiansen Charles H, Ottenbacher Kenneth J

机构信息

Division of Rehabilitation Sciences, School of Allied Health Sciences, University of Texas Medical Branch, Galveston, TX 77555, USA.

出版信息

Arch Phys Med Rehabil. 2003 Aug;84(8):1118-24. doi: 10.1016/s0003-9993(03)00203-x.

DOI:10.1016/s0003-9993(03)00203-x

PMID:12917848

Abstract

OBJECTIVE

To establish the stability and validity of information collected in a virtual reality environment from persons with traumatic brain injury (TBI).

DESIGN

Prospective correlation design to examine 3-week test-retest results for equivalence reliability between computer-simulated and natural environments.

SETTING

A residential rehabilitation center for brain injury.

PARTICIPANTS

Fifty-four consecutive patients with TBI who received comprehensive rehabilitation services and who were at different stages of recovery.

INTERVENTION

An immersive virtual kitchen was developed in which a meal preparation task involving multiple steps was performed. The subjects completed meal preparation both in a virtual reality kitchen and an actual kitchen twice over a 3-week period.

MAIN OUTCOME MEASURES

Time and errors on task completion using virtual reality assessment, actual kitchen performance (analogous to the virtual reality environment), occupational therapy (OT) evaluation, and neuropsychologic tests.

RESULTS

The stability of performance using the simulated virtual environment was estimated with intraclass correlation coefficients (ICCs). The ICC value for total performance, based on all steps involved in the meal preparation task, was.76 (P<.01). The construct validity of the simulated environment was examined by correlating performance in the virtual environment with that in the actual kitchen (r=.63, P<.01), the OT evaluation (r=.30, P=.05 for meal preparation; r=.40, P=.01 for cognitive subskills), and neuropsychologic tests (r=.56, P<.01 for the full-scale intelligence quotient [IQ]; r=.40, P<.01 for the verbal IQ; r=.56, P<.01 for the performance IQ). Finally, a multiple regression analysis revealed that the virtual reality environment test was a good predictor for the actual assessment kitchen (beta=.35, P=.01).

CONCLUSION

The virtual reality system showed adequate reliability and validity as a method of assessment in persons with brain injury.

摘要

目的

确定在虚拟现实环境中收集的创伤性脑损伤（TBI）患者信息的稳定性和有效性。

设计

前瞻性相关性设计，以检查计算机模拟环境与自然环境之间3周重测结果的等效可靠性。

设置

一家脑损伤康复中心。

参与者

54例连续接受综合康复服务且处于不同恢复阶段的TBI患者。

干预

开发了一个沉浸式虚拟厨房，其中执行了一项涉及多个步骤的 meal preparation 任务。受试者在3周内两次在虚拟现实厨房和实际厨房中完成 meal preparation。

主要观察指标

使用虚拟现实评估完成任务的时间和错误、实际厨房表现（类似于虚拟现实环境）、职业治疗（OT）评估和神经心理学测试。

结果

使用组内相关系数（ICC）估计模拟虚拟环境中表现的稳定性。基于 meal preparation 任务中涉及的所有步骤，总表现的ICC值为0.76（P<0.01）。通过将虚拟环境中的表现与实际厨房中的表现（r = 0.63，P<0.01）、OT评估（meal preparation时r = 0.30，P = 0.05；认知子技能时r = 0.40，P = 0.01）和神经心理学测试（全量表智商[IQ]时r = 0.56，P<0.01；言语IQ时r = 0.40，P<0.01；操作IQ时r = 0.56，P<0.01）进行相关性分析，检验模拟环境的结构效度。最后，多元回归分析表明，虚拟现实环境测试是实际评估厨房的良好预测指标（β = 0.35，P = 0.01）。