Table 1 Comparison of demographic and clinical characteristics of essential tremor patients vs. healthy controls.

From: A data mining approach using cortical thickness for diagnosis and characterization of essential tremor

 

Healthy controls (N = 18)

Essential tremor patients (N = 18)

p value

Sex (men)

7 (38.9%)

10 (55.6%)

χ(1) = 1.001, p = 0.317

Age in years

63.3 ± 12.0

63.7 ± 10.5

t(34) = −0.089, p = 0.930

Years of education

9.0 ± 3.3

7.8 ± 2.8

t(34) = 1.196, p = 0.240

Number of medications

1.8 ± 2.8

2.6 ± 2.4

U = 120.0, p = 0.192

Tremor severity1

 

34.4 ± 15.5

 

Tremor duration in years

 

23.6 ± 16.6

 

Presence of head tremor

 

5 (27.8%)

 

Presence of voice tremor

 

3 (16.7%)

 
  1. Values are expressed as mean ± standard deviation. Student’s t test was used for parametric comparisons and Mann Whitney test for non parametric comparisons, and the chi-square test for sex proportion. 1Fahn–Tolosa–Marin Tremor Rating Scale.
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