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Table 2 Factor score coefficient matrix

From: Evaluation of the reliability and validity for X16 balance testing scale for the elderly

Domain

Item

Factor

1

2

3

I

1

−0.081

− 0.077

0.395

 

2

−0.055

−0.099

0.392

3

−0.035

−0.070

0.334

4

−0.136

0.160

0.216

II

5

0.029

0.185

−0.046

 

6

−0.044

0.288

−0.047

7

−0.152

0.432

−0.047

8

−0.169

0.455

−0.056

III

9

0.229

−0.159

−0.009

 

10

0.199

−0.076

−0.053

11

0.154

−0.051

−0.029

12

0.197

−0.072

−0.045

13

0.164

−0.032

−0.030

14

0.242

−0.151

−0.044

15

0.203

−0.105

−0.011

16

0.138

0.012

−0.031

  1. Domain I is static balance, domain II is postural stability, domain III is dynamic balance, and domain IV (sum of domains I, II, and III) is balance performance. Items are named as domain number followed by item number, for example, II 7 indicates the item 7 which is in domain II. Items were numbered consecutively through the whole balance testing scale. The 16 items of the balance testing scale were subjected to factor analysis, the extraction method was principal component analysis, and the rotation method was Varimax with Kaiser Normalization. Three factors were retained because their Eigenvalues were greater than 1 and their cumulative contribution to the total variance reached 72.0%. Numbers with absolute values greater than 0.1 were in bold