. Author manuscript; available in PMC: 2010 Mar 30.

Published in final edited form as: Mov Disord. 2009 Nov 15;24(15):2211–2217. doi: 10.1002/mds.22749

TABLE 3.

MM in ET cases versus controls

	All ET cases (N = 107)	ET cases with rest tremor (N = 16)	ET cases without rest tremor (N = 91)	Controls (N = 97)
MM in hands or feet	35 (32.7)	7 (43.8)^a	28 (30.8)	23 (23.7)
Total MM score (range = 0–80)	3.9 ± 7.7^b	7.3 ± 11.3^b	3.4 ± 7.1^a	1.9 ± 3.9
MM in hands	16 (15.0)^b	3 (18.8)^b	13 (14.3)^b	5 (5.2)
Total hand MM score (range = 0–60)	1.4 ± 4.5^b	2.6 ± 7.8^b	1.3 ± 3.7^b	0.4 ± 2.0
MM in feet	28 (26.2)	6 (37.5)	22 (24.2)	19 (19.6)
Total foot MM score (range = 0–20)	2.5 ± 4.9^a	4.7 ± 6.5^b	2.1 ± 4.5	1.5 ± 3.5
MM present during more than one task	18 (16.8%)^a	6 (37.5%)^c	12 (13.2%)	8 (8.2%)

Values are either means ± standard deviation or number (percentage).

P < 0.10 comparing case groups with controls.

P < 0.05 comparing case groups with controls.

P < 0.01 comparing case groups with controls.