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• W2890779909 abstract "Abstract Background Balance impairment affects over 75% of individuals with multiple sclerosis (MS), and leads to an increased risk of falling. Numerous postural sway metrics have been shown to be sensitive to balance impairment and fall risk in individuals with MS. Yet, there are no guidelines concerning the most appropriate postural sway metrics to monitor impairment. This investigation implemented a machine learning approach to assess the accuracy and feature importance of various postural sway metrics to differentiate individuals with MS from healthy controls as a function of physiological fall risk. Methods This secondary data analysis included 153 participants (50 controls and 103 individuals with MS) who underwent posturography based balance assessment (30s eyes open standing on a force platform) and physiological fall risk assessment (Physiological Profile Assessment - PPA). Participants were further classified into four subgroups based on fall risk: controls (n=50, 64.9 ± 4.9 years old, PPA < 1); low-risk MS (n=34, 54.0 ± 13.1 years old, PPA < 1); moderate-risk MS (n=27, 58.3 ± 8.3 years old, 1 ≤ PPA < 2); high-risk MS (n=42, 56.8 ± 9.7 years old, PPA ≥ 2). Twenty common sway metrics were derived following standard procedures, and subsequently used to train a machine learning algorithm (random forest – RF, with 10-fold cross validation) to predict individuals’ fall risk grouping. The feature importance from the RF algorithms was used to select the strongest sway metric for fall risk prediction. Results and Discussion The sway-metric based RF classifier had high classification accuracy in discriminating controls from MS individuals (> 86%). Sway sample entropy, a sway regularity metric, was identified as the strongest feature for classification of low-risk MS individuals from healthy controls. Whereas for all other comparisons, mediolateral sway amplitude was identified as the strongest predictor for fall risk groupings. These findings may set the foundation for the development of guidelines for reporting balance impairment in individuals with MS." @default.
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• W2890779909 date "2018-09-06" @default.
• W2890779909 modified "2023-09-27" @default.
• W2890779909 title "Fall Risk Prediction in Multiple Sclerosis Using Postural Sway Measures: A Machine Learning Approach" @default.
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• W2890779909 doi "https://doi.org/10.1101/410704" @default.
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