學院

醫學院

系所

職能治療學系

題名

Validity, responsiveness, and minimal clinically important difference of EQ-5D-5L in stroke patients undergoing rehabilitation

作者

Chen, P-Y.^†, Lin, K-C.^†, Liing, R-J., Wu, C-Y.^*, Chen, C-L., & Chang, K-C.

期刊名稱

Quality of Life Research（SCI-Indexed）

發表日期

2015

著作性質

原著

語文

英文

關鍵字

stroke, quality of life, rehabilitation, validity, MCID, EQ-5D-5L

摘要

Purpose To examine the criterion validity, responsiveness, and minimal clinically important difference (MCID) of the EuroQoL 5-Dimensions Questionnaire (EQ-5D-5L) and visual analog scale (EQ-VAS) in people receiving rehabilitation after stroke.

Methods The EQ-5D-5L, along with four criterion measures—the Medical Research Council scales for muscle strength, the Fugl-Meyer Assessment, the Functional Independence Measure, and the Stroke Impact Scale—were administered to 65 patients with stroke before and after 3 to 4 weeks therapy. Criterion validity was estimated using the Spearman correlation coefficient. Responsiveness was analyzed by the effect size (ES), standardized response mean (SRM), and criterion responsiveness. The MCID was determined by anchor-based and distribution-based approaches. The percentage of patients exceeding the MCID was also reported.

Results Concurrent validity of the EQ-Index was better compared with the EQ-VAS. The EQ-Index has better power for predicting the rehabilitation outcome in the activities of daily living than other motor-related outcome measures. The EQ-Index was moderately responsive to change (SRM = 0.63), whereas the EQ-VAS was only mildly responsive to change. The MCID estimation of the EQ-Index (the percentage of patients exceeding the MCID) was 0.10 (33.8%) and 0.10 (33.8%) based on the anchor-based and distribution-based approaches, respectively, and the estimation of EQ-VAS was 8.61 (41.5%) and 10.82 (32.3%).

Conclusions The EQ-Index has shown reasonable concurrent validity, limited predictive validity, and acceptable responsiveness for detecting the health-related quality of life in stroke patients undergoing rehabilitation, but not for EQ-VAS. Future research considering different recovery stages after stroke is warranted to validate these estimations.