Mean (SEM) calibrations and strata for PF-10 based on the Parkinson's disease sample (n=227)
| n | Average item calibration (logit) | SEM | Infit statistic | Strata | Item order in population survey | |
| Vigorous activities | 186 | 2.78 | 0.25 | 0.9 | 7 | 10 |
| Walking more than a mile | 187 | 1.35 | 0.19 | −1.4 | 6 | 7 |
| Climbing several flights of stairs | 186 | 0.77 | 0.17 | 0.3 | 5 | 9 |
| Walking half a mile | 183 | 0.14 | 0.16 | −0.6 | 4 | 4 |
| Bending, kneeling or stooping | 186 | 0.03 | 0.16 | 1.5 | 4 | 8 |
| Lifting or carrying groceries | 186 | −0.26 | 0.15 | −2.2 | 3 | 6 |
| Moderate activities | 187 | −0.27 | 0.15 | −1.7 | 3 | 5 |
| Bathing or dressing | 186 | −1.12 | 0.14 | 4.8 | 2 | 2 |
| Climbing one flight of stairs | 185 | −1.66 | 0.14 | −1.0 | 1 | 3 |
| Walking 100 yards | 183 | −1.75 | 0.14 | −1.8 | 1 | 1 |