Skip to main content

Table 5 Subject mean error, standard deviation, mean absolute error and its relative percentage averaged across clinical centers for both walking speeds (spatio-temporal parameters)

From: Estimation of spatio-temporal parameters of gait from magneto-inertial measurement units: multicenter validation among Parkinson, mildly cognitively impaired and healthy older adults

Parameter

Clinical center

\(\overline{me}\)

\(\overline{sde}\)

\(\overline{mae}\)

\(\overline{mae \% }\)

NW

FW

NW

FW

NW

FW

NW

FW

Stride Time (ms)

UNIGE

< 1

< 1

15

14

12

11

1

1

KULEU

< 1

< 1

12

11

9

9

1

1

TASMC

< 1

< 1

14

13

10

10

1

1

NEWCA

− 1

< 1

15

15

12

11

1

1

Stance Time (ms)

UNIGE

− 20

− 18

17

17

29

27

3

3

KULEU

− 11

− 11

17

15

25

22

2

2

TASMC

− 8

− 10

17

16

24

23

2

2

NEWCA

− 11

− 12

17

15

24

23

3

4

Swing Time (ms)

UNIGE

20

18

17

17

29

27

3

3

KULEU

11

11

17

16

25

23

2

2

TASMC

8

10

18

16

24

23

2

2

NEWCA

12

13

17

15

25

23

2

3

Step Time (ms)

UNIGE

< 1

< 1

16

15

13

12

1

1

KULEU

< 1

< 1

14

13

11

11

1

1

TASMC

< 1

< 1

16

15

12

12

1

1

NEWCA

< 1

< 1

15

14

13

12

2

2

Stride Length (mm)

UNIGE

− 1

− 3

22

27

21

22

2

2

KULEU

− 8

− 5

19

21

22

25

2

2

TASMC

− 14

− 15

19

22

26

28

2

2

NEWCA

− 4

− 6

19

30

19

27

2

2

Gait Velocity (mm/s)

UNIGE

− 2

− 4

23

30

21

24

2

2

KULEU

− 7

− 5

20

25

21

27

2

2

TASMC

− 13

− 16

20

25

25

30

3

2

NEWCA

− 4

− 5

18

36

19

31

2

2

  1. \(\overline{me}\): subject mean error averaged across centers; \(\overline{sde}\): subject error standard deviation averaged across centers; \(\overline{mae}\): subject mean absolute error averaged across centers; \(\overline{\% mae}\): mean absolute error referred to parameter estimate averaged across centers