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. 2019 Jul 28;19(15):3320. doi: 10.3390/s19153320

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Polar plot comparing Spearman’s rho correlation of (A) the Mini Balance Evaluation Test (Mini-BEST), (B) the Activities-specific Balance Confidence scale (ABC-scale), (C) the Parkinson’s Disease Questionnaire (PDQ-39) and (D) the Movement Disorder Society-sponsored revision of the Unified Parkinson’s Disease Rating Scale (MDS-UPDRS) with the sensitive 24 objective measures in each domain of clinical measures. Absolute values are given. The black dashed circle indicates the threshold of a significant correlation.