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Table 3 Fit of the "Activity" scale to Rasch model

From: Reliability, construct validity and measurement potential of the ICF comprehensive core set for osteoarthritis

ICF code

ICF category title

Location

SE

Individual Item Fit Residual

Chi-Square Test Statistics

p

Testlet1

      

d430

d440

d445

Lifting and carrying objects

Fine hand use

Hand and arm use

0.156

0.087

-0.235

0.471

0.790

d450

Walking

-0.799

0.143

2.069

5.327

0.070

d510

Washing oneself

-0.261

0.150

-0.831

4.122

0.127

d530

Toileting

1.216

0.167

1.482

0.907

0.635

d540

Dressing

0.667

0.221

-0.622

3.326

0.190

d640

Doing housework

-0.978

0.138

-0.566

1.519

0.468