Table 1.

Characteristics of the participants with cervical dystonia

ID	Disease years	Direction of torticollis	Other symptoms	Severity of cervical dystoniaa	Severity of torticollisb	Global Dystonia Rating Scale (neck)c	Time since botulinum toxin (months)
1	5	Right	Right laterocollis	18	4	4	Not applicable
2	13	Left	Retrocollis	20	3	7	2.5
3	3	Left	Anterocollis	12	2	4	3.4
4	15	Right	Left laterocollis	18	1	4	4.4
5	2	Left	None	18	3	5	3.2
6	13	Right	None	18	2	4	3.3
7	5	Right	Right laterocollis	18	1	4	3.0
8	9	Left	Right laterocollis, right shift	17	1	5	3.2
9	21	Right	Anterocollis	7	2	3	2.9
10	10	Left	Posterior shift	16	1	5	2.7
11	2	Left	Right laterocollis	11	2	3	3.3
12	13	Right	Anterocollis	13	2	6	11.0
13	24	Right	Retrocollis	15	3	6	2.8
14	26	Right	Right laterocollis, anterocollis	23	3	8	4.7
15	7	Right	Left laterocollis, anterocollis	18	3	7	26.0
16	8	Right	None	16	4	8	3.0

^aSeverity of cervical dystonia was determined using the Motor Disability scale of the Toronto Western Spasmodic Torticollis Rating Scale.

^bSeverity of torticollis was determined from item #1 in the Toronto Western Spasmodic Torticollis Rating Scale.

^cThe Global Dystonia Rating Scale is a scale from 0 to 10 for each body part. The scores presented here refer only to the neck region.