Abstract
Purpose To develop an instruction manual to administer the Motor Assessment Scale (MAS) via videoconferencing (Tele-MAS), investigate its validity, reliability and measurement error. Materials and methods In-person assessment, conducted at the participant’s home, was compared to remote assessment conducted by rater A. Then, within two days, the rater B, repeat the remote assessment (n = 41). Part of the sample (n = 10) was assessed again within seven days by rater A to determine test-retest reliability. Concurrent validity, agreement of alternate forms (in-person x remote) for total score and reliability of individual items were analyzed using respectively the Pearson correlation coefficient, Bland-Altman plots and weighted Kappa (Kw). Interrater and test-retest reliability were analyzed by Intraclass Correlation Coefficient (ICC). Standard Error of Measurement (SEM) and Minimal detectable changes (MDC) were computed. Results The Tele-MAS instruction manual was developed. In-person MAS and Tele-MAS present a high positive correlation (r = 0.97). Bland-Altman plots showed adequate agreement (MD=-0.0 point). Most Individual items showed excellent reliability (Kw > 0.70). Tele-MAS showed excellent interrater (ICC(2,1)=0.92) and test-retest (ICC(3,1)=0.98) reliability. Tele-MAS presents a SEM = 3% and MDC = 8%. Conclusion The Tele-MAS is a valid and reliable global motor assessment scale to be applied in individuals after stroke.
Published Version
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