Table 6 Measurement invariance model between different samples fitting indices and comparison

Functional limitation

0.91(1.345)

0.74(1.371)

2.178*

0.030

0.125

Physical pain

1.86(1.766)

1.12(1.629)

7.880**

< 0.001

0.436

Psychological discomfort

1.42(1.725)

0.61(1.412)

8.993**

< 0.001

0.514

Physical disability

1.64(1.728)

1.05(1.567)

6.343**

< 0.001

0.358

Psychological disability

1.36(1.550)

0.89(1.432)

5.592**

< 0.001

0.315

Social disability

1.05(1.480)

0.63(1.278)

5.301**

< 0.001

0.304

Social handicap

1.07(1.492)

0.71(1.351)

4.452**

< 0.001

0.253

OHIP-14 TOTAL

9.31(9.190)

5.75(8.799)

7.046**

< 0.001

0.396