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Table 4 Item parameter estimation results of the FACIT–F (N = 597)

From: Psychometric properties of the Chinese version of the functional assessment of chronic illness therapy–fatigue (FACIT–F) among patients with breast cancer

Item

Difficulty

S.E.

Infit MNSQ

Outfit MNSQ

Item 1

–0.04

0.06

0.71

0.73

Item 2

0.01

0.06

0.69

0.69

Item 3

0.09

0.06

0.70

0.79

Item 4

0.20

0.06

0.65

0.68

Item 5

0.22

0.06

0.63

0.64

Item 6

–1.27

0.05

1.36

1.48

Item 7

–1.22

0.05

1.53

1.59

Item 8

–0.65

0.05

1.73

1.90

Item 9

1.47

0.07

1.24

1.10

Item 10

0.31

0.06

1.12

1.12

Item 11

0.87

0.06

0.84

0.77

Item 12

0.02

0.06

0.92

0.73