Well, there's this one. But there's still an enrollment bias: https://clinicaltrials.gov/ct2/show/NCT04334954?term=serosurvey&cond=covid-19&draw=2&rank=1
I suspect a truly random sampling for either drawing blood or sticking a swab up your nose is a bit difficult ... maybe a bit less irritating than talking to that person with the clipboard in the square or at the mall. On 5/6/20 1:29 PM, Gary Schiltz wrote: > Where are the large scale random sampling efforts? -- ☣ uǝlƃ .-. .- -. -.. --- -- -..-. -.. --- - ... -..-. .- -. -.. -..-. -.. .- ... .... . ... FRIAM Applied Complexity Group listserv Zoom Fridays 9:30a-12p Mtn GMT-6 bit.ly/virtualfriam unsubscribe http://redfish.com/mailman/listinfo/friam_redfish.com archives: http://friam.471366.n2.nabble.com/ FRIAM-COMIC http://friam-comic.blogspot.com/
