youyanggu/covid19_projections

Corrections for PPV of tests?

nimish opened this issue · 1 comments

Is correction for PPV done, or is it built into the prevalence-ratio/positivity-rate relation? As prevalence drops, tests start becoming less and less predictive for true positivity assuming a fixed sensitivity and specificity.

We do not correct for positive/negative predictive values, so that's something to keep in mind.