| Â | PF-10 | HAQ | PROMIS PF-10 | PROMIS PF-20 | PROMIS PF CAT-10 |
|---|
Floor | -2.5 | -4.5 | -2.9 | -4.5 | -4.5 |
Ceiling | -0.2 | -0.4 | 0.2 | 0.2 | 1.2 |
Range | 2.3 | 4.1 | 3.1 | 4.8 | 5.7 |
- Each unit below zero (the population mean) is scored as a negative of standard deviations toward the floor, and each unit above zero (the population mean) is a standard deviation in the direction of the ceiling "range" as the algebraic sum of standard deviations of positive and negative [15]. 1 Instruments: PF-10 - 10-item physical function scale of the SF-36 [3]; HAQ - 20-item Health Assessment Questionnaire [2]; PROMIS PF-10 - PROMIS PF-10, 10-item Physical Function assessment form [5]; PROMIS PF-20 - PROMIS PF-20, 20-item physical function assessment form [5]; PROMIS PF CAT-10 - PROMIS PF 10-item Computerized Assessment Testing [5]
