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Table 3 Agreement and difference between estimates and measure of active time.

From: Accelerometer-based wireless body area network to estimate intensity of therapy in post-acute rehabilitation

 

Inside 20% Critical Margin of Agreement (N)

Differences between methods (%)

Activities

Total

M3

M1

M3

M1

P-Value

Gait

81

55 (67.9%)

42 (51.9%)

-1.4 ± 32.7

-17.6 ± 50.7

<0.001

Balance

50

23 (46.0%)

19 (38.0%)

-18.9 ± 69.1

-18.9 ± 64.9

≤0.993

Reinforcement

40

18 (45.0%)

8 (20.0%)

-7.2 ± 83.1

-42.9 ± 101.6

<0.001

Weight bear.

39

19 (48.7%)

17 (43.6%)

-7.9 ± 65.2

-30.0 ± 83.5

≤0.003

Stairs

32

17 (53.1%)

9 (28.1%)

30.6 ± 59.3

18.8 ± 71.1

≤0.028

Prosthesis

25

13 (52.0%)

13 (52.0%)

23.5 ± 57.7

22.2 ± 62.0

≤0.633

Antalgic therapy

9

0 (0.0%)

0 (0.0%)

91.1 ± 104.2

94.1 ± 105.9

≤0.052

Walking, out.

6

3 (50.0%)

4 (66.7%)

33.0 ± 83.8

26.15 ± 91.8

≤0.511

Others

13

2 (15.4%)

1 (7.7%)

10.5 ± 94.5

16.5 ± 92.2

≤0.101

  1. On the left side of the table, data reports the number of activities that were inside the ± 20% Critical Margin of agreement in the Bland-Altman Plots. On the right side, difference between measure (TM) and estimate (M) of active time are presented according to this formula: [(M-TM)/((TM+M)/2)*100]. Paired Sample T Test were used to evaluate the differences of agreement of both M3 and M1 with TM. Values are presented as mean ± SD.