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Table 2 Item location, item fit and scoring key for the final solution of the analyses

From: Rasch analysis of the modified version of the Postural Assessment Scale for Stroke patients: Postural Stroke Study in Gothenburg (POSTGOT)

Item

 

Location

Std Dev

Item fit residual mean

x2

DF

P

Max score

Rescored

Scoring key

1

Supine to affected side lateral

-3.61

0.32

-0.03

1.12

2

0.57

2

Yes

0

0

1

2

4

Sitting without support

-3.25

0.31

-0.14

0.18

2

0.92

2

Yes

0

0

1

2

12

Sitting on the edge of bed to supine

-3.23

0.27

-0.54

0.29

2

0.86

3

 

0

1

2

3

6 + 11

Standing with support & Sitting down from standing up

-2.30

0.17

-0.63

0.22

2

0.90

6

 

*

*

*

*

3

Supine to sitting up on edge of bed

-2.18

0.30

0.33

0.56

2

0.75

2

Yes

0

0

1

2

2

Supine to non-affected side lateral

-1.94

0.30

-0.26

0.99

2

0.61

2

Yes

0

0

1

2

5

Sitting to standing up

-1.89

0.25

-1.42

0.53

2

0.77

3

 

0

1

2

3

10

Standing, picking up a shoe from the floor

1.35

0.26

-1.11

0.72

2

0.70

2

Yes

0

1

1

2

7

Standing without support

2.10

0.26

0.29

8.94

2

0.01

2

Yes

0

1

1

2

8

Standing on non-paretic leg

7.33

0.20

-0.06

3.88

2

0.14

2

Yes

0

1

1

2

9

Standing on paretic leg

7.63

0.16

-0.07

5.36

2

0.07

3

 

0

1

2

3

  1. Location; on the logit ruler from the easiest (-) to the most difficult (+) item, Std Dev; Standard deviation, x2; Chi-square, P;Chi-square probability (Bonferroni adjusted p 0.004545). *For each item = max score 6.