. Author manuscript; available in PMC: 2016 Mar 7.

Published in final edited form as: Mov Disord. 2015 Jun 22;30(10):1327–1334. doi: 10.1002/mds.26265

TABLE 3.

Cox regression for mortality controlled for spiral score and age at spiral score^a

Definite ET, Probable/Possible ET, Other Tremors vs. Remaining Participants

	N (Control Group)	HR (95% CI)	P Value
Definite ET (n = 34)	1,831	0.70 (0.46; 1.06)	0.09
Possible/probable ET (n = 65)		0.91 (0.66; 1.25)	0.54
Other tremors (n = 17)		1.23 (0.69; 2.21)	0.49

Although the ET patients have a lower mortality rate, the other tremors have a trend toward higher mortality than the aging-related tremor. These are not significant findings, most likely because of the small sample size.