PPF(redirected from Production possibility frontier)
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PPFPlasma protein fraction, see there.
performance-based physical function test,
A four-component assessment of physical functioning. The PPF includes: 1. the time it takes a subject to walk 10 feet; 2. the time it takes to stand up from a seated position in a chair five consecutive times; 3. the grip strength in the dominant hand; and4. a test of balance and stability.Each component of the test is given a score from 0 to 4. The highest possible score on the test, indicating optimal physical functioning, is 16.