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. Author manuscript; available in PMC: 2019 Jul 1.
Published in final edited form as: Parkinsonism Relat Disord. 2018 Mar 13;52:24–29. doi: 10.1016/j.parkreldis.2018.03.011

Table 2.

Balance stratified by quartiles of tremor severity in 190 FD-ET

TTS Q1 TTS Q2 TTS Q3 TTS Q4 Significance
Number of falls in past year 0.4 ± 0.7 [0.0] 0.1 ± 0.4 [0.0] 0.4 ± 0.7 [0.0] 0.4 ± 0.9 [0.0] 0.15a
Number of near-falls in past year 2.6 ± 7.5 [0.0] 1.1 ± 1.8 [0.0] 2.2 ± 3.8 [1.0] 7.1 ± 22.4 [1.0] 0.35a
ABC-6 total score 506.3 ± 94.0 [520.0] 528.3 ± 84.1 [550.0] 463.9 ± 153.1 [522.0] 444.8 ± 183.9 [500.0] 0.10a
Tandem gait (number of steps to the side) 0.5 ± 0.9 [0.0] 0.4 ± 0.8 [0.0] 1.3 ± 2.4 [0.0] 1.6 ± 2.4 [0.0] 0.04a
Tandem stance (number of seconds without falling to the side) 9.3 ± 2.1 [10.0] 9.8 ± 1.3 [10.0] 8.2 ± 3.4 [10.0] 8.7 ± 3.0 [10.0] 0.04a

Values are mean ± standard deviation [median].

a

Kruskal-Wallis test.

ABC (Activities of Balance Confidence). TTS (total tremor score).

TTS Q1 = total tremor score quartile 1 (total tremor score ≤ 5).

TTS Q2 = total tremor score quartile 2 (total tremor score = 5.5 – 6.5).

TTS Q3 = total tremor score quartile 3 (total tremor score = 7 – 8.5).

TTS Q4 = total tremor score quartile 4 (total tremor score > 8.5).