Table 2 Summary of 2—PL model parameters and item fit statistics of the ABCD knowledge scale.

From: Validation of the Dutch-Flemish translated ABCD questionnaire to measure cardiovascular diseases knowledge and risk perception among adults

Item

% Correct

Delta (SE)

Alpha (SE)

Outfit

Infit

MSQ

P

MSQ

P

1

67.2

 − 0.72 (0.11)

1.31 (0.20)

0.76

0.007

0.96

0.510

2

68.4

 − 0.52 (0.07)

3.20 (0.60)

0.66

0.002

0.60

0.000

3

78.3

 − 0.84 (0.08)

3.82 (0.77)

0.34

0.000

0.49

0.000

4

62.1

 − 0.47 (0.09)

1.42 (0.20)

0.98

0.849

1.01

0.876

5

69.3

 − 0.75 (0.11)

1.50 (0.22)

0.75

0.008

0.93

0.307

6

74.1

 − 1.40 (0.22)

0.86 (0.14)

1.34

0.016

1.33

0.000

7

76.0

 − 1.43 (0.21)

0.94 (0.15)

1.42

0.004

1.32

0.000

8

27.8

0.87 (0.11)

1.58 (0.25)

0.70

0.569

0.92

0.698

9

92.0

 − 2.65 (0.41)

1.09 (0.22)

0.56

0.004

0.78

0.000

  1. 2—PL: Two-parametric logistic model; MSQ: Mean-square; SE: standard error; Delta (δ): Difficulty; Alpha (α): Discrimination.
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