Table 1:

Characteristics of the patients with ET and control subjects*

Characteristic	Controls	a-ET	h-ET	P Value
Sex (M/F)	16/16	18/12	6/14	.11^†
Age, yr	66.2 (8.1)	61.5 (16.5)	70.6 (7.6)	.03^‡
Age at onset, yr		43.0 (18.9)	49.9 (16.9)	.18^§
Duration of ET, yr		18.6 (15.1)	20.4 (14.7)	.70^§
Fahn-TRS-A scale		8.50 (2–17)	12.50 (5–16)	.003^‖
Bain scale		34.0 (25–65)	41.50 (30–66)	.011^‖

Note:—ET indicates essential tremor; a-ET, arm tremor; h-ET, arm and head tremor; Fahn-TRS-A, Fahn-Tolosa-Martin Tremor Rating Scale, Part A.
* Data are given as mean values (SD) or median values (range) when appropriate.
† χ² test.
‡ One-way ANOVA, followed by unpaired t test, corrected according to Bonferroni.
§ Unpaired test.
‖ Mann-Whitney U test.