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Table 2 Convergent validity, relative and absolute reliability for individual joints and total scores of the assessgame

From: Validity and reliability of an accelerometer-based assessgame to quantify upper limb selective voluntary motor control

 

MACS

SCUES

Therapist opinion

ICC (95%-CI)

SRD [1st; 2nd; 3rd quartile of patient scores]

Target joint accuracy

Less affected

shoulder

0.22

−0.23

0.28*

0.52 (0.29; 0.72)

1.95 [1.18; 1.91; 2.33]

elbow

0.39**

−0.16

0.35*

0.36 (0.12; 0.61)

4.02 [1.51; 1.79; 2.75]

lower arm

0.02

−0.04

0.28

0.82 (0.60; 0.95)

0.77 [1.47; 1.84; 2.34]

wrist

0.25

−0.23

0.29*

0.63 (0.43; 0.76)

1.68 [1.26; 1.66; 2.39]

fingers

0.22

−0.26

0.33*

0.58 (0.24; 0.84)

1.70 [1.71; 2.34; 2.85]

mean

 

0.28*

−0.38**

0.40**

0.76 (0.63; 0.87)

1.13 [1.62; 1.96; 2.71]

ρ

0.33

−0.49**

0.54**

More affected

shoulder

0.32*

−0.20

0.31*

0.46 (0.18; 0.65)

1.63 [1.41; 1.95; 2;46]

elbow

0.45**

−0.29*

0.42**

0.61 (0.31; 0.88)

2.94 [1.88; 2.47; 3.40]

lower arm

0.49**

−0.39*

0.65***

0.73 (0.41; 0.90)

1.52 [1.70; 2.32; 3.48]

wrist

0.34*

−0.52***

0.27

0.79 (0.56; 0.91)

1.96 [1.40; 2.40; 3.25]

fingers

0.22

−0.27

0.26

0.57 (0.10; 0.80)

1.87 [1.77; 2.52; 3.46]

mean

 

0.31*

−0.26*

0.52***

0.85 (0.71; 0.93)

0.99 [1.89; 2.38; 2.98]

ρ

0.39*

−0.36*

0.62***

Both sides

mean

 

0.29*

−0.26*

0.50***

0.80 (0.62; 0.91)

1.02 [1.68; 2.24; 2.66]

ρ

0.37*

−0.37*

0.64***

Involuntary movements

Less affected

shoulder

0.35*

−0.17

0.47**

0.70 (0.50; 0.84)

3.91 [1.63; 3.66; 5.70]

elbow

0.39**

−0.31*

0.59***

0.70 (0.38; 0.88)

7.92 [1.77; 3.86; 6.27]

lower arm

0.25

−0.25

0.32*

0.60 (0.34; 0.86)

5.04 [1.54; 3.10; 4.40]

wrist

0.23

−0.18

0.39**

0.48 (0.24; 0.79)

8.53 [1.61; 3.01; 4.70]

fingers

0.20

−0.22

0.48**

0.68 (0.15; 0.94)

7.83 [1.57; 2.80; 5.20]

mean

 

0.33*

−0.38**

0.47***

0.84 (0.55; 0.92)

4.43 [1.73; 3.62; 5.96]

ρ

0.40*

−0.52**

0.62***

More affected

shoulder

0.29*

−0.21

0.43**

0.81 (0.71; 0.88)

3.58 [2.48; 3.69; 6.20]

elbow

0.34*

−0.21

0.51**

0.49 (0.10; 0.78)

10.44 [2.23; 4.48; 7.70]

lower arm

0.49**

−0.53**

0.66***

0.54 (0.23; 0.89)

11.72 [2.45; 4.00; 7.79]

wrist

0.35*

−0.44**

0.50**

0.65 (0.41; 0.94)

9.39 [1.33; 3.45; 5.01]

fingers

0.44**

−0.43**

0.60***

0.48 (0.21; 0.77)

16.68 [2.04; 3.56; 6.75]

mean

 

0.37**

−0.32*

0.61***

0.84 (0.70; 0.93)

4.54 [2.68; 4.68; 7.72]

ρ

0.46**

−0.49**

0.77***

Both arms

mean

 

0.37**

− 0.37**

0.64***

0.92 (0.82; 0.97)

2.55 [2.42; 4.38; 6.34]

ρ

0.45**

−0.55**

0.79***

  1. All correlation coefficients are Kendall’s Tau except for the rows marked with ρ, which are Spearman’s correlation coefficients. The p-values of the correlation coefficients are indicated by asterisks: *(0.05 > p ≥ 0.01), ** (0.01 > p ≥ 0.001), and *** (p < 0.001)
  2. Abbreviations: MACS Manual Ability Classification System, SCUES Selective Control of the Upper Extremity Scale, ICC intraclass correlation coefficient, 95%-CI bias-corrected and accelerated, bootstrapped 95% confidence interval, SRD smallest real difference