Open problems · P6
The value of a measurement
Which test, at which age, most reduces uncertainty about a person's future? Expected information gain per dollar turns the landscape into a decision tool.
Why it matters
Most testing is habit. A principled ranking would tell clinicians and health systems which tests to add and which to drop.
What exists
- Out-of-sample value of 56 single measurements in NHANES (Tests).
- Test prices for a subset of biomarkers in the catalogue.
A first step
Extend the ranking from single tests to the best next test given the ones already taken, and price it.