Table 3 Rasch analysis results of ArmA-TH passive and active function sub-scale after rescoring

1.   Cleaning palm

0.28

0.98

0.94

2.   Cutting fingernails

-1.59

0.87

0.89

3.   Putting on a glove

-1.11

0.84

0.79

4.   Cleaning armpit

0.02

0.90

0.84

5.   Putting arm through a sleeve

0.42

1.21

1.27

6.   Put on a splint

1.68

1.11

0.87

7.   Positioning arm on a cushion or support in sitting

0.30

1.20

1.37

Section B^b Active function sub-scale

 1.   Fasten buttons on clothing

-0.35

0.84

0.92

 2.   Pick up a glass, bottle, or can

1.18

1.58

0.92

 3.   Use a key to unlock the door

-0.01

0.71

0.91

 4.   Write on paper

-0.58

1.18

1.25

 5.   Open a previously opened jar

-0.38

0.76

0.88

 6.   Eat with a knife and fork

0.30

0.95

1.11

 7.   Hold an object still while using unaffected hand

-1.61

1.50

1.15

 8.   Difficulty with balance when walking due to your arm

-0.79

1.67

1.05

 9.    Dial a number on home phone

-0.15

0.78

1.01

 10. Tuck in your shirt

-0.42

0.96

1.04

 11. Comb or brush your hair

0.96

0.32

0.67

 12. Brush your teeth

0.93

1.30

0.75

 13. Drink from a cup or mug

0.92

0.53

0.80