PMID- 35094664 OWN - NLM STAT- MEDLINE DCOM- 20230315 LR - 20240402 IS - 1945-5119 (Electronic) IS - 1074-9357 (Print) IS - 1074-9357 (Linking) VI - 30 IP - 3 DP - 2023 Apr TI - The minimal clinically important difference of the motricity index score. PG - 298-303 LID - 10.1080/10749357.2022.2031532 [doi] AB - INTRODUCTION: The Motricity Index (MI) can predict motor function after rehabilitation, but its minimal clinically important difference (MCID) has not been established. The primary study aim was to estimate the MCID value of the MI arm score. METHODS: Between 2017 and 2018, 173 participants hospitalized with confirmed ischemic stroke were recruited into an observational rehabilitation study. Participants with motor weakness as measured by the Fugl-Meyer upper-extremity (FM-UE) and MI with complete baseline and follow-up assessments at 3 months were included in this analysis. The longitudinal recovery of the MI arm score was anchored to having a poor outcome based on the FM-UE recovery (<9) longitudinally. Results reported include the area-under-curve (AUC), along with sensitivity, specificity, and optimal cut-points based on maximizing the Youden statistic. RESULTS: Sixty-nine patients (median [IQR] age 70 [18] years; 48% male; 54% white) were included in the final analysis. Mean +/- standard deviation outcome scores at 3-months were: MI arm: 83.19 +/- 22.80; FM-UE: 53.04 +/- 17.26. For the primary results, the MI arm score optimal MCID cutoff for observed recovery was 13 points with a sensitivity of 80% (95% Confidence Interval (CI)(67.6%, 92.4%)) and a specificity of 69.0% (95% CI (52.1, 85.8%)), and the AUC was 0.8082 (0.7007, 0.9157). CONCLUSIONS: This was the first study to report the MCID of the MI arm score, as anchored to the FM-UE recovery between acute evaluation and 3-months. The estimated optimal MCID of improvement in the MI arm score was 13 points. FAU - Lin, Chen AU - Lin C AUID- ORCID: 0000-0001-5291-9674 AD - Departments of Neurology, The University of Alabama at Birmingham, Birmingham, AL, USA. FAU - Arevalo, Yurany A AU - Arevalo YA AD - Departments of Neurology, The University of Alabama at Birmingham, Birmingham, AL, USA. FAU - Harvey, Richard L AU - Harvey RL AD - Department of Physical Medicine and Rehabilitation, Northwestern University, Chicago, IL, USA. FAU - Prabhakaran, Shyam AU - Prabhakaran S AD - Department of Neurology, The University of Chicago, Chicago, IL, USA. FAU - Martin, Kimberly D AU - Martin KD AD - Departments of Epidemiology, The University of Alabama at Birmingham, Birmingham, AL, USA. LA - eng GR - I21 RX003612/RX/RRD VA/United States GR - IK2 CX002104/CX/CSRD VA/United States GR - UL1 TR003096/TR/NCATS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20220130 PL - England TA - Top Stroke Rehabil JT - Topics in stroke rehabilitation JID - 9439750 SB - IM MH - Humans MH - Male MH - Aged MH - Female MH - *Stroke Rehabilitation MH - *Stroke/complications/diagnosis MH - Minimal Clinically Important Difference MH - Recovery of Function MH - Disability Evaluation MH - Upper Extremity PMC - PMC9338175 MID - NIHMS1776476 OTO - NOTNLM OT - Stroke rehabilitation OT - functional outcome measure OT - minimal clinically important difference OT - motricity index OT - stroke outcomes OT - upper limb EDAT- 2022/02/01 06:00 MHDA- 2023/03/16 06:00 PMCR- 2024/04/01 CRDT- 2022/01/31 05:33 PHST- 2022/02/01 06:00 [pubmed] PHST- 2023/03/16 06:00 [medline] PHST- 2022/01/31 05:33 [entrez] PHST- 2024/04/01 00:00 [pmc-release] AID - 10.1080/10749357.2022.2031532 [doi] PST - ppublish SO - Top Stroke Rehabil. 2023 Apr;30(3):298-303. doi: 10.1080/10749357.2022.2031532. Epub 2022 Jan 30.