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Table 1 Demographic and clinical characteristics of participants

From: Timing control of gait: a study of essential tremor patients vs. age-matched controls

Outcome ET Control Significance
n 155 60  
Age, years (SD) 81.9 (8.5) 80.1 (6.4) 0.21a
Sex, Female (%) 92 (59.4 %) 40 (66.7 %) 0.40b
Height, meters (SD) 1.7 (0.4) 1.7 (0.3) 0.51c
Weight, Kg (SD) 68.4 (17.9) 68.1 (13.7) 0.91c
Leg Length, meters (SD) 0.93 (0.06) 0.93 (0.06) 0.45c
Age at tremor onset, years (SD) 41.1 (22.8) NA NA
Cranial Tremor Score, N (%)*
 0 57 (36.7 %) NT NA
 1 43 (27.7 %)   
 2 42 (27.1 %)   
 3 11 (7.1 %)   
Kinetic Tremor Score, Mean ± SD
Range
13.74 ± 4.24
1–24
NT NA
Intention Tremor Score, Mean ± SD
Range
1.39 ± 0.64
0–2.5
NT NA
Neck Tremor, N (%)
 0 Absent 112 (72.2 %) NT NA
 1 Present 43 (27.7 %)   
Postural Stability Retropulsion Test, N (%)
 0 Normal 4 NT NA
 1 Recovers unaided 113   
 2 Would fall if not caught 30   
 3 Falls spontaneously 8   
 4 Unable to stand 0   
  1. *Data unavailable on two ET cases
  2. NA not applicable, NT not tested, SD standard deviation
  3. a = independent t-test; b = Chi-square test; c = Mann–Whitney U test