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Table 3 Cluster composition

From: Data-driven characterization of walking after a spinal cord injury using inertial sensors

 

Cluster 1

Cluster 2

Cluster 3

Cluster 4

p-value

Number

37

14

8

7

 

Age

54.8 ± 15.3

60.2 ± 15.4

52.2 ± 14.3

55 ± 15.7

0.619

Sex

24.3% female

21.4% female

62.5% female

28.6% female

0.193

BMI

25.3 ± 4.6 kg/m\(^2\)

24.9 ± 5.1 kg/m\(^2\)

22.1 ± 8.2 kg/m\(^2\)

24.1 ± 5.1 kg/m\(^2\)

0.752

6MWT

489 ± 123 m

306 ± 135m

121 ± 64m

80 ± 42m

< 0.001

Chronicity

29.7% acute

35.7% acute

62.5% acute

57.1% acute

0.232

Diagnosis

48.6% traumatic

42.9% traumatic

37.5% traumatic

71.4% traumatic

0.601

LEMS

45.8 ± 7.6

37.3 ± 9.3

41.1 ± 10.3

34.7 ± 10.1

0.005

SCIM

85.2 ± 18.5

69.0 ± 16.9

60.6 ± 21.6

59.6 ± 17.6

< 0.001

SCIM Mob.

36.3 ± 7.0

27.4 ± 9.6

19.8 ± 6.6

15.6 ± 4.9

< 0.001

Walking Aid

24.3% with

57.1% with

100% with

85.7% with

< 0.001

Orthosis

10.8% with

0% with

25.0% with

57.1% with

0.006

WISCI II

16.8 ± 4.2

12.6 ± 5.4

11.0 ± 4.0

7.0 ± 1.1

< 0.001

  1. Demographics and clinical characterization of the clusters with the corresponding p-values of the Kruskal-Wallis test. Values are presented as mean ± standard deviation. BMI body mass index, AIS ASIA impairment scale, NLI neurological level of injury, LEMS lower extremity motor score, SCIM spinal cord independence measure, WISCI walking index for spinal cord injury