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Table 2 Difficulty parameters of F-SCHNOS-O item – Rating Scale Model RSM (n = 165)

From: Translation, cultural adaptation and validation of the SCHNOS in French

Item

Step

Difficulty

p-value

95% CI

SCHNOS 1

1 vs. 0

−0.27

0.020

−0.50

−0.04

2 vs. 1

−0.37

0.003

−0.61

− 0.13

3 vs. 2

0.04

0.749

−0.19

0.26

4 vs. 3

0.43

< 0.001

0.22

0.65

5 vs. 4

1.37

< 0.001

1.09

1.66

SCHNOS 2

1 vs. 0

−0.08

0.486

−0.30

0.14

2 vs. 1

−0.18

0.131

−0.42

0.05

3 vs. 2

0.23

0.047

0.00

0.45

4 vs. 3

0.62

< 0.001

0.40

0.85

5 vs. 4

1.56

< 0.001

1.26

1.87

SCHNOS 3

1 vs. 0

−0.26

0.022

−0.49

−0.04

2 vs. 1

−0.37

0.003

−0.61

−0.13

3 vs. 2

0.04

0.719

−0.18

0.26

4 vs. 3

0.44

< 0.001

0.22

0.66

5 vs. 4

1.38

< 0.001

1.09

1.66

SCHNOS 4

1 vs. 0

−0.17

0.146

−0.39

0.06

2 vs. 1

−0.27

0.027

−0.51

−0.03

3 vs. 2

0.14

0.220

−0.08

0.36

4 vs. 3

0.54

< 0.001

0.32

0.76

5 vs. 4

1.48

< 0.001

1.18

1.77