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Table 2 Differences in gait parameters between Fallers and Non-Fallers. P value represents statistical significance of difference between groups derived from Unpaired two-tailed t-test, Welch’s corrected t-tests*, or Mann Whitney U tests**. WORM calculated as average distance (cm) per metre (mean/m) and per second (mean/s) of walking

From: Walking orientation randomness metric (WORM) score: pilot study of a novel gait parameter to assess walking stability and discriminate fallers from non-fallers using wearable sensors

 

Fallers

Non-Fallers

Between Group Differences (Fallers – Non-Fallers)

Mean + SD

Mean / Median Difference

95% Confidence Interval

Difference (%)

P

Spatial Gait Metrics

Gait Velocity (m/s)

0.637 + 0.261

1.13 + 0.252

−0.489

−0.674 to − 0.304

−43%

< 0.001

Step Length (cm)

45.3 + 13.6

62.0 + 13.7

−16.8

−26.6 to −6.90

−27%

0.002

Rhythm/Temporal Gait Metrics

Cadence (steps/min)

84.5 + 14.3

109 + 7.57

−24.8

−33.2 to −16.5

−23%

< 0.001*

Step Time (ms)

757 + 139

554 + 38.7

203

127 to 279

+ 37%

< 0.001*

Gait Asymmetry

Step Time Asymmetry (ms)

191 + 108

47.1 + 26.6

144

85.3 to 202

+ 305%

< 0.001*

Step Length Asymmetry (cm)

13.4 + 8.65

8.10 + 3.42

2.8

−0.304 to 7.23

+ 65%

0.080**

Gait Variability

Gait Velocity Variation (CV%)

15.2 + 7.01

7.09 + 2.17

8.08

4.09 to 12.1

+ 114%

0.001

Step Time Variation (CV%)

18.9 + 8.63

7.53 + 3.71

11.3

6.26 to 16.4

+ 150%

0.001

Step Length Variation (CV%)

23.9 + 14.6

10.5 + 4.52

13.4

5.11 to 21.7

+ 128%

0.003

Gait Stability

WORM

3.64 ± 3.90

0.211 ± 0.171

2.49

1.01 to 3.61

+ 1179%

< 0.001**

  1. CV% Coefficient of Variance* 100, WORM Walking Orientation Randomness Metric