Table 1. Demographic data of subjects included in the study.

	Cervical dystonia (n = 19)	Controls (n = 20)	p
Age	48.53 ± 2.14	45.20 ± 3.26	0.400 (a)
Gender (F:M)	16 : 3	14 : 6	0.292 (b)
Years of study	13.32 ± 0.61	14 .55 ± 0.44	0.109 (a)
Disease duration (years)	8.37 ± 1.15	NA
TWSTRS	12.2 ± 2.96	NA

Reported as Mean ± SEM.

(a): two samples t-test

(b): χ2 test.

TWSTRS = Toronto Western Torticollis Rating Scale