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. 2009 Dec;19(6):623–633. doi: 10.1089/cap.2009.0035

Table 3.

Tic Effects in TD Subjects (N = 11)

Rating Baseline (mean ± SD) End point (mean ± SD) Difference (mean ± SD) Effect size (r) p value
CGI-Tic
 Severity 4.45 (0.52) 3.18 (0.60) −1.27 (0.65) 0.616 0.004
YGTSS
 Motor tic 15.82 (4.40) 9.73 (2.76) −6.09 (4.41) 0.598 0.005
 Vocal tic 12.36 (7.10) 7.00 (5.76) −5.36 (4.57) 0.569 0.008
 Total tic 28.18 (7.74) 16.73 (7.54) −11.45 (6.23) 0.626 0.003
 Global Severity 61.82 (13.49) 33.73 (15.18) −28.09 (11.83) 0.626 0.003

Abbreviations: TD = Tourette's disorder; SD = standard deviation; CGI-Tic = Clinical Global Impressions Scale for tics; YGTSS = Yale Global Tic Severity Scale.