Table 2 Item Parameter Estimates and Fit Statistics
From: Development of a rapid point-of-care patient reported outcome measure for cataract surgery in India
Item | Item location | Infit MNSQ | Outfit MNSQ | Polyserial item-test correlation |
|---|---|---|---|---|
1. Problem climbing stairs | −0.49 | 0.90 | 0.63 | 0.59 |
2. Problem making out bumps | 0.14 | 0.87 | 0.76 | 0.69 |
3. Problem seeing animals or vehicles | −0.15 | 0.77 | 0.56 | 0.66 |
4. Problem recognizing faces | −0.27 | 0.97 | 0.69 | 0.58 |
5. Problem seeing outside in bright light | 1.20 | 1.00 | 0.94 | 0.75 |
6. Frightened to go out | −1.00 | 0.99 | 1.06 | 0.59 |
7. Enjoy social functions less | −0.37 | 0.94 | 0.81 | 0.55 |
8. Ashamed can’t see | −0.75 | 1.06 | 1.00 | 0.60 |
9. Dazzled in bright light | 1.38 | 1.29 | 1.30 | 0.70 |
10. Vision blurred in sunlight | −0.18 | 0.76 | 0.69 | 0.77 |
11. Bright light hurt eyesa | 0.03 | 1.53 | 2.32 | 0.48 |
12. Blurred vision | 0.45 | 0.87 | 0.87 | 0.82 |