Table 2.

Change in tic characteristics among those who completed a 12-month visit. Values in parentheses indicate mean ± SD unless indicated otherwise.

Sample characteristic	Baseline	12-month
Days since tic onset	112.28 ± 56.44	374.17 ± 16.51
YGTSS total	24.72 ± 12.33	17.92 ± 12.83
Total tic score	17.06 ± 5.89	13.62 ± 7.39
Motor	10.55 ± 3.89	8.91 ± 4.57
Phonic	6.49 ± 4.50	4.71 ± 4.19
Impairment	7.66 ± 8.00	4.31 ± 6.84
DCI score	32.63 ± 13.01	43.14 ± 15.36
Ever had a phonic tic	53	56
Ever had a complex tic	30	41
DSM-IV TS or CTD	0	21
DSM-IV-TR TS or CTD	0	581
DSM-5 TS or CTD	0	642

¹The other 7 children had a reported interim remission of 3 months or more, for a diagnosis of a repeated episode of Transient Tic Disorder. See discussion in ref. [124].

²The remaining child had experienced several phonic tics but only one motor tic [125].