Table 1.

Descriptive statistics for subjects studied.

	Exam Checklist Showing Upper Face Only (N=146)	GDRS Scores Non-Zero for Upper Face only (N=161)	Diagnosis = Focal Dystonia, Upper Face (N=214)
Gender
Females	96 (65.6%)	112 (70.0%)	144 (67.3%)
Males	50 (34.2%)	49 (30.0%)	70 (32.7%)
Age
At recruitment	59±0.8 (36–86)	59±1.0 (36–87)	59.0±1.0 (28–87)
At dystonia onset	56.0±2.2 (3–82)	56.0±2.6 (3–82)	56±2.6 (3–82)
Duration of illness	11.3±9.1 (0–60)	11.2±9.4 (0–60)	11.7±10.3 (0–61)
Race
White	128 (88.9)	142 (88.2%)	190(88.8%)
Black	8 (5.6%)	8 (5.0%)	9 (4.2%)
Asian	3 (2.1%)	5 (3.1%)	5 (2.3%)
Other	4 (2.8%)	5 (3.1%)	9 (4.2%)
Unknown	1 (0.7%)	1 (0.6%)	1 (0.5%)

Among 3222 total subjects with isolated dystonia, 3 different sources of information suggested different numbers of participants with isolated focal blepharospasm (exam=146, GDRS=161, diagnosis=214). Age, age of onset, and disease duration are reported as mean ± SD (range).