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Table 5 Equated scores showing the minor impact of age-DIF

From: Psychometric evaluation of the Positive Mental Health (PMH) scale using item response theory

Age < 54

Age ≥ 54

1

1.50

2

2.47

3

3.43

4

4.38

5

5.33

6

6.29

7

7.26

8

8.25

9

9.26

10

10.29

11

11.32

12

12.35

13

13.37

14

14.36

15

15.33

16

16.29

17

17.22

18

18.14

19

19.06

20

19.97

21

20.88

22

21.79

23

22.69

24

23.41