Table 4 Summary fit statistics for Rasch analyses.

Evaluation Sample

Mean

SD

Mean

SD

Value

p

PSI

-test (CI)

1. Physical set up

-0.02

2.353

-0.264

1.385

172

0.056

0.946

14.60%

(12.2-17.0)

2. Physical Final

0.066

0.867

-0.337

1.098

62.8

0.77

0.905

6.03%

(3.6-8.4)

8.52%

3. Cognitive Set Up

-0.563

3.058

-0.478

1.362

179.9

<0.001

0.902

6.71%

(4.3-9.1)

4. Cognitive Final

0.21

0.623

-0.432

1.041

24.3

0.665

0.849

4.46%

11.00%

5. Diurnal sleep Set Up

-0.019

0.989

-0.443

1.293

49.7

0.801

0.864

5.75%

(3.3-8.2)

5a. Diurnal sleep modified

-0.069

1.136

-0.451

1.235

68.9

0.083

0.845

4.95%

3.78%

6. Nocturnal Sleep Set Up

0.208

1.873

-0.378

1.379

127.3

<0.001

0.822

5.7

(3.3-8.2)

7. Nocturnal Sleep Final

0.285

1.389

-0.401

1.378

79.2

0.081

0.821

2.85%

7a. Nocturnal Sleep modified

0.26

1.466

-0.399

1.209

56.4

0.118

0.761

2.95%

3.47%

8. Summary Scale Set up

0.06

2.319

-0.332

1.631

370.4

<0.001

0.936

10.79%

(8.4-13.2)

9. Summary scale Final

-0.077

1.173

-0.31

1.144

106.2

0.117

0.916

5.40%

6.62%

Validation Sample

10. Physical

0.066

0.867

-0.337

1.098

62.9

0.77

0.905

6.03%

(3.6-8.4)

7.23%

11. Cognitive

0.234

0.739

-0.358

0.994

22.8

0.74

0.842

3.15%

10.38%

12. Summary

0.16

1.329

-0.381

1.284

97.4

0.278

0.898

6.62%

(4.2-9.0)

2.83%

13. Diurnal Sleep

0.041

1.158

-0.462

1.335

58.8

0.305

0.843

7.69%

(5.3-10.1)

14. Diurnal Sleep Modified

0.069

1.136

0.451

1.235

68.9

0.083

0.845

4.76%

4.09%

15. Nocturnal Sleep

0.235

1.817

-0.377

1.293

102.1

0.001

0.808

5.99%

(3.6-8.4)

16. Nocturnal Sleep modified

0.26

1.466

-0.399

1.209

56.4

0.118

0.761

3.15%

3.77%

Ideal Values

0

<1.4

0

<1.4

>0.05 ^a

>0.85

<5.0% (CI)