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Graphical representation of the YGTSS Total Tic Severity Score across the five assessment points. Primary endpoint is the 3-month follow-up; after this point, assessments are not blinded. Error bars indicate 95% CIs. 3FU, 3-month follow-up; 6FU, 6-month follow-up; 12FU, 12-month-follow-up; BIP TIC ERP, internet-delivered exposure and response prevention; BIP TIC HRT, internet-delivered habit reversal training; Post, post-treatment; YGTSS, Yale Global Tic Severity Scale.
