Reply to Now testing is opt-out, not opt-in

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[quote=Anonymous][quote=Anonymous][quote=Anonymous][quote=Anonymous][quote=Anonymous][quote=Anonymous][quote=Anonymous][quote=Anonymous]Does anyone have a source on the false positive rate for these tests? Genuine question. There are lots of anecdotes like rice university, and the two “fleeting contact” people in the Australia outbreak, but is there any robust data on it?[/quote]

It's not enough for you that a DCUM poster saw it on FB or heard about it on another forum? You want "DATA"!!!???

Kidding of course. Welcome to the DCUM echo chamber.  [/quote]

Research/explanation/support from experts has been provided already on this thread, and on the linked thread.  People just don’t bother to read a thread.[/quote]

The article quoted as research support is based on data from last April, prior to Delta. You'd need to take into account the much higher contagion rate of delta, which would negate some of her statements about transmissibility. [/quote]

Additionally, the research does not refer to the particular test being given and its false positive rate. You have to assume there might have been advances in both the testing itself and the accuracy of the false negative or positive measurements. I want to know what exactly those rates are for that test specifically. [/quote]

The article mentions a "saliva PCR" test, which is what DCPS is using.  [/quote]

Not all tests are the same; you need to know the manufacturer.  For example, the Binax and the Ellume rapid at-home tests have different false positive and false negative rates.

Also, statistically, the choice to tighten up on false positives means more false negatives, and vice versa.

For medical tests, generally false negatives are considered a bigger problem — you don’t want to miss an actual case, while positives can just be retested for confirmation.[/quote]

Yes, we know.  We don't know the specific tests that DCPS is using, we just now -- according to the consent form -- that they are saliva PCR.  As noted, in the research cited above, even tests with what one would think of as a "good" efficiency rate (like 95%) are still problematic for false positives in a "low" prevalence setting (where "low" is what we have in DC now) (notably, even double what we have now, you'd still have a majority of your positive tests be false positives).[/quote]

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