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Psicologia: Reflexão e Crítica

Psychology: Research and Review

Table 2 Discrimination parameters and item difficulty

From: European health literacy survey questionnaire short form (HLS-Q12): adaptation and evidence of validity for the Brazilian context

Item

a

b1

b2

b3

Item 01

1.72

-0.12

1.41

2.88

Item 02

1.81

-0.85

0.86

2.22

Item 03

1.63

-1.45

0.43

2.13

Item 04

2.01

0.38

1.67

2.62

Item 05

1.75

-0.32

0.97

2.31

Item 06

2.26

0.16

1.40

2.46

Item 07

1.31

-1.24

0.58

2.14

Item 08

0.76

-1.91

0.57

3.01

Item 09

2.12

0.18

1.53

2.85

Item 10

1.35

-0.31

1.08

2.32

Item 11

2.32

0.04

1.39

2.48

Item 12

1.27

-0.73

1.01

2.53

  1. a: item discrimination parameter, b1 = threshold difficulty level for response categories 1 and 2; b2 = threshold difficulty level for response categories 2 and 3; b3 = threshold difficulty level for response categories 3 and 4
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