Epistatacadam on Nostr: Diagnostic tests value are overrated. The diagnosis (from history & examination) ...
Diagnostic tests value are overrated.
The diagnosis (from history & examination) comes first! This gives the pre test probability, the test allows us to calculate the post test probability.
Without the pre test probability being reasonably high, most positive results will be in people who don't have the disease.
Now add the non-ergodicity of some physiological measures...
Thyroid function is the classic. Individual time averages are different from Ensemble averages. Normal range?
The diagnosis (from history & examination) comes first! This gives the pre test probability, the test allows us to calculate the post test probability.
Without the pre test probability being reasonably high, most positive results will be in people who don't have the disease.
Now add the non-ergodicity of some physiological measures...
Thyroid function is the classic. Individual time averages are different from Ensemble averages. Normal range?