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Table 3 Absolute reliability indicated by standard error of measurement (SEM), and minimal detectable change (MDC)

From: Psychometric properties of instrumented postural sway measures recorded in community settings in independent living older adults

Balance Conditions

SEM

MDC

AP RMS (mG)

Level EO

1.00

2.78

Level EC

1.58

4.38

Foam EO

1.28

3.55

Foam EC

2.41

6.69

Semi-tandem

2.42

6.73

Feet tandem

3.19

8.76

ML RMS (mG)

Level EO

1.15

3.21

Level EC

1.59

4.4

Foam EO

2.02

5.61

Foam EC

3.40

9.43

Semi-tandem

0.86

2.44

Feet tandem

1.43

3.99

AP NPL (mG/s)

Level EO

1.90

5.28

Level EC

3.18

8.84

Foam EO

1.87

5.20

Foam EC

2.63

7.31

Semi-tandem

4.13

11.45

Feet tandem

3.71

10.29

ML NPL (mG/s)

Level EO

2.81

7.79

Level EC

3.10

8.61

Foam EO

3.55

9.86

Foam EC

4.97

13.78

Semi-tandem

3.36

9.31

Feet tandem

3.87

10.75

  1. EO Eyes Open, EC Eyes Closed, RMS root-mean-square, NPL normalized path length, AP antero-posterior and ML mediolateral. RMS sway (mG), and NPL sway (mG/s)