
Nassim Nicholas Taleb @nntaleb
Let me make it more formal: Over 2 periods, a lagging marker can have a variation Δ w/an opposite sign to that of the patient's condition (say degrades while patient improves). A leading marker can have an unfavorable variation Δ while patient is same. https://t.co/xpDTFh2Vla — PolitiTweet.org
Nassim Nicholas Taleb @nntaleb
@dschan02 Not exact. Covid patient feels better on day 10 than day 8 but CRP and D-Dimer are worse that day. Meanin… https://t.co/8VIjs3yglJ