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Validation of the Chinese Version of the Modified Gait Efficacy Scale for Patients Removing Ilizarov External Fixation Device for Over One Year

Authors Xia A, Zhang X, Liu Y, Luo W, Yu Z

Received 19 February 2020

Accepted for publication 26 June 2020

Published 30 July 2020 Volume 2020:14 Pages 1307—1315

DOI https://doi.org/10.2147/PPA.S250440

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 2

Editor who approved publication: Dr Naifeng Liu


An Xia,1,* Xiuli Zhang,2,* Yong Liu,3 Wen Luo,2 Zeying Yu1

1Orthopedics Department, The 2nd Ward of Orthopedics, Tianjin Hospital, Tianjin, People’s Republic of China; 2The 2nd Ward of Joint Surgery Department, Tianjin Hospital, Tianjin, People’s Republic of China; 3Orthopedics Department, Tianjin Hexi Hospital, Tianjin, People’s Republic of China

*These authors contributed equally to this work

Correspondence: Wen Luo
The 2nd Ward of Joint Surgery, Tianjin Hospital, 406 Jiefangnan Road, Tianjin 300211, People’s Republic of China
Tel +86 22-131 1619 0054
Email wl1984@yahoo.com

Objective: To validate the Chinese version of the modified Gait Efficacy Scale (C-mGES) in people who have had an Ilizarov external fixation apparatus removed more than 1 year ago.
Methods: (1) Translating and cultural adapting the English version mGES into Chinese. (2) Validation of the C-mGES with the Perceived Efficacy Patient-Physician Interactions Scale (PEPPI-10), Self-Efficacy for Rehabilitation Outcome Scale (SER), Lower Extremities Function Assessment Scale (LEFS), and Pain Self-Efficacy Questionnaire (PSEQ). Instrument measurements included item generation, construct validity, reliability testing, test-retest reliability and correlation with other scales. Confirmatory factor analysis (CFA) was applied to determine internal consistency and construct validity. One hundred five persons who had Ilizarov external fixation devices removed more than 1 year ago were investigated.
Results: One hundred and two patients were included in this research. Our study showed that the C-mGES has high internal consistency (Cronbach’s α-coefficient 0.928). CFA confirmed good fit indices for a unidimensional model of the C-mGES. In test-retest reliability, 97 patients were analyzed. The results showed that the substantial kappa coefficient is 0.680, and the ICC is 0.98 (95% CI).
Conclusion: Our study showed that the Chinese version mGES has a good internal consistency, construct validity and satisfactory criterion-related validity. This scale can assist in the assessment of walking self-efficacy in patients who have had Ilizarov external fixation devices removed for over 1 year.

Keywords: gait, self-efficacy, Ilizarov external fixation

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