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. 2021 May 4;36(8):1899–1910. doi: 10.1002/mds.28593

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© 2021 The Authors. Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society

This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

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FIG. 1 — Yale Global Tic Severity Scale (YGTSS) Motor and YGTSS Vocal tic severity subscale scores in individuals with persistent motor and vocal tics (PMVT) versus Tourette syndrome (TS) in the Tourette Association of America International Consortium for Genetics (TAAICG) (A,B) and (OCGAS) (C,D) samples. Note that only PMVT participants with motor tics were included in the YGTSS Motor tic severity subscale analysis, and only PMVT participants with vocal tics were included in the YGTSS Vocal tic severity subscale analyses.