. Author manuscript; available in PMC: 2014 Jul 11.

Published in final edited form as: Neuroepidemiology. 2013 Jul 11;41(2):10.1159/000351698. doi: 10.1159/000351698

Table 2.

Head Tremor by Age Stratum and Tremor Duration Stratum

	Number (Proportion) with Head Tremor (Entire Sample, N = 363)

Age group
≤29 years ¹	1 (9.1)
30 – 39 years	2 (9.1)
40 – 49 years	5 (33.3)
50 – 59 years	9 (36.0)
60 – 69 years	25 (28.4)
70 – 79 years	63 (47.0)
≥80 years	35 (51.5)
	p < 0.001 ²

Tremor duration group
0 – 10 years	47 (35.6)
11 – 20 years	24 (33.3)
21 – 30 years	22 (37.9)
31 – 40 years	14 (46.7)
41 – 50 years	11 (37.9)
≥50 years	22 (52.4)
	p = 0.054 ³

All values are number (%).

All participants were ≥18 years of age.

In a logistic regression analysis in which head tremor was the dependent variable and age group was the independent variable, odds ratio = 1.5 (95% Confidence Interval = 1.23 – 1.73, p <0.001).

In a logistic regression analysis in which head tremor was the dependent variable and tremor duration group was the independent variable, odds ratio = 1.1 (95% Confidence Interval = 0.998 – 1.27, p = 0.054).