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Table 2 Discrimination and thresholds parameters for SWEMWBS

From: Item response theory-based psychometric analysis of the Short Warwick-Edinburgh Mental Well-Being Scale (SWEMWBS) among adolescents in the UK

 

Discrimination parameter

Difficulty parameters for each threshold

a

b1

b2

b3

b4

Item 1

1.33

 − 2.85

 − 1.50

0.05

1.91

Item 2

1.85

 − 2.48

 − 1.36

0.06

1.86

Item 3

2.05

 − 2.58

 − 1.16

0.03

1.60

Item 4

2.91

 − 2.30

 − 1.22

 − 0.10

1.41

Item 5

3.04

 − 2.39

 − 1.26

 − 0.19

1.25

Item 6

1.78

 − 2.91

 − 1.56

 − 0.38

1.17

Item 7

2.07

 − 3.07

 − 1.93

 − 0.71

0.79