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Table 2 ASKSG Items, Sample Percentage of Correct Responses and Estimated Item Difficulty from Rasch Model

From: Autism spectrum disorder knowledge scale: Chinese revision of the general population version

NO.

Accuracy (%)

Item difficulty parameter(η)

Est.

SE

11

92.11

-2.875

0.219

13

85.80

-2.135

0.172

12

81.39

-1.759

0.156

28

78.55

-1.550

0.149

17

76.97

-1.442

0.145

8

76.34

-1.400

0.144

27

76.03

-1.379

0.144

30

74.45

-1.278

0.141

31

74.45

-1.278

0.141

20

71.61

-1.105

0.137

24

71.61

-1.105

0.137

10

71.29

-1.086

0.136

26

70.98

-1.068

0.136

29

69.72

-0.995

0.134

5

66.56

-0.819

0.131

4

57.10

-0.330

0.125

25

54.26

-0.190

0.124

15

53.63

-0.159

0.124

14

53.31

-0.143

0.124

16

50.16

0.010

0.124

19

50.16

0.010

0.124

2

49.84

0.026

0.124

3

49.53

0.041

0.124

9

49.53

0.041

0.124

23

41.96

0.410

0.125

18

37.54

0.631

0.127

7

25.87

1.272

0.138

6

21.14

1.575

0.147

1

20.19

1.641

0.149

22

15.77

1.980

0.163

  1. Items in Table 2 are ranked according to increasing difficulty from top to bottom. The first column number indicates the order in which items appear in the ASKSG