Why do long COVID estimates seem to vary so much from study to study?

Data and Metrics Long COVID

A: Different case definitions, study participants, data collection methods, and study timing across studies. TL:DR: Current estimates of the proportion of COVID-19 cases that develop long COVID range from 3-20% and have been as high as 50%! Considering how studies differ can help us understand why estimates vary so much across studies. Things to keep Read more…