Hundreds of thousands in L.A. may have been infected with coronavirus: study

Re:Hundreds of thousands in L.A. may have been infected with... by herf on Monday April 20, 2020 @06:55PM (#22929758)

Premier is an importer for "Hangzhou Biotest Biotech Co". Most of the validation data in the Stanford preprint also appear in this sell sheet:

http://img.bj.wezhan.cn/content/sitefiles/2005911/images/132...

Stanford reports doing a 30-person validation test with pre-COVID-19 hip surgery patients (100% negative). But this is not enough to validate these population-scale tests, especially when 98.5% specificity (rather than 99.5%) would fully invalidate the headline result.

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Re:Hundreds of thousands in L.A. may have been infected with... by zby on Tuesday April 21, 2020 @06:28AM (#22933627)

> Stanford reports doing a 30-person validation test with pre-COVID-19 hip surgery patients (100% negative)

Hmm - I guess I should now go to the source - but from the other link: " test validation included a total of 30+371 pre-covid blood tests, and only 399 of them came back negative." https://statmodeling.stat.columbia.edu/2020/04/19/fatal-flaw... - I think I trust it more

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Re:Hundreds of thousands in L.A. may have been infected with... by herf on Tuesday April 21, 2020 @12:29PM (#22936475)

Yes, the 371 are listed on the sell sheet (see tweet above). Unclear if Stanford was involved, but I would suspect not.

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