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Table 4 Item fit statistics and point measure correlation of EOL-CDI (28 items)

From: Psychometric properties of the end-of-life care decision inventory (EOL-CDI): a mixed-methods study

EOL-CDI item

Logit

SE

Infit

Outfit

Point measure correlation

MnSq

Z

MnSq

Z

Observed

Expected

EOL-CDI item 1

 − 3.17

0.40

0.90

 − 0.20

0.70

 − 0.36

0.42

0.34

EOL-CDI item 2

 − 1.79

0.24

0.99

0.02

1.03

0.20

0.40

0.40

EOL-CDI item 3

 − 2.45

0.30

0.79

 − 0.88

0.97

0.06

0.49

0.37

EOL-CDI item 4

1.08

0.14

1.23

4.72

1.31

3.46

0.17

0.38

EOL-CDI item 5

 − 0.01

0.16

1.22

2.72

1.30

2.73

0.24

0.43

EOL-CDI item 6

0.29

0.15

1.27

3.82

1.31

3.27

0.20

0.42

EOL-CDI item 7

 − 0.45

0.17

1.23

2.23

1.27

1.91

0.25

0.43

EOL-CDI item 9

 − 1.24

0.21

1.05

0.37

1.15

0.73

0.37

0.42

EOL-CDI item 10

 − 0.48

0.17

1.15

1.50

1.19

1.83

0.23

0.35

EOL-CDI item 11

1.50

0.14

1.13

2.54

1.19

1.83

0.23

0.35

EOL-CDI item 12

 − 1.42

0.22

1.10

0.72

1.08

0.41

0.34

0.41

EOL-CDI item 13

 − 2.88

0.36

0.90

 − 0.28

0.59

 − 0.77

0.45

0.35

EOL-CDI item 14

0.88

0.14

1.07

1.43

1.09

1.19

0.33

0.39

EOL-CDI item 15

 − 0.16

0.16

1.21

2.40

1.25

2.14

0.26

0.43

EOL-CDI item 16

0.32

0.15

0.84

 − 2.70

0.79

 − 2.63

0.56

0.42

EOL-CDI item 17

 − 0.90

0.19

0.73

 − 2.52

0.60

 − 2.65

0.64

0.43

EOL-CDI item 18

0.98

0.14

0.97

 − 0.73

0.92

 − 0.94

0.42

0.39

EOL-CDI item 19

3.37

0.22

1.00

0.08

0.84

 − 0.49

0.21

0.20

EOL-CDI item 20

1.20

0.14

0.90

 − 2.21

0.93

 − 0.82

0.45

0.37

EOL-CDI item 21

2.75

0.18

1.00

0.02

0.97

 − 0.08

0.25

0.25

EOL-CDI item 22

 − 0.31

0.16

0.72

 − 3.50

0.64

 − 3.27

0.66

0.43

EOL-CDI item 23

 − 0.23

0.16

0.87

 − 1.59

0.88

 − 1.02

0.53

0.43

EOL-CDI item 24

 − 0.13

0.16

0.91

 − 1.09

0.85

 − 1.35

0.50

0.43

EOL-CDI item 25

 − 0.70

0.18

0.85

 − 1.46

0.66

 − 2.42

0.57

0.43

EOL-CDI item 26

0.82

0.14

0.97

 − 0.63

0.98

 − 0.23

0.42

0.39

EOL-CDI item 27

1.38

0.14

0.95

 − 1.09

0.93

 − 0.72

0.41

0.36

EOL-CDI item 28

1.98

0.15

0.90

 − 1.64

0.80

 − 1.57

0.41

0.32

EOL-CDI item 29

 − 0.23

0.16

0.84

 − 1.89

0.89

 − 0.95

0.54

0.43

Mean ± SD

  

0.99 ± 0.15

 

0.97 ± 0.22

  
  1. EOL-CDI end-of-life care decision inventory, MnSq mean-square residual, SE standard error
  2. MnSq of outside range > 1.3 or < 0.6, and Z-value outside range > 2.0 or <  − 2.0