Table 2 Differential item functioning (DIF) by age (N = 597)
Item | DIF (age < 60) | DIF (age ≥ 60) | DIF Contrast |
|---|---|---|---|
Item 1 | –0.10 | –0.04 | –0.06 |
Item 2 | –0.13 | 0.01 | –0.14 |
Item 3 | 0.17 | 0.09 | 0.09 |
Item 4 | –0.07 | 0.24 | –0.31 |
Item 5 | –0.04 | 0.25 | –0.29 |
Item 6 | –1.50 | –1.24 | –0.26 |
Item 7 | –1.38 | –1.22 | –0.16 |
Item 8 | –0.13 | –0.71 | 1.58 |
Item 9 | 1.82 | 1.44 | 0.38 |
Item 10 | 0.27 | 0.31 | –0.04 |
Item 11 | 1.03 | 0.87 | 0.16 |
Item 12 | 0.27 | –0.01 | 0.28 |