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BTW, what does this even mean: "But if the tests work much better when taken three times over the course of several days."
by kozinc 3y ago
BTW, what does this even mean: "But if the tests work much better when taken three times over the course of several days."
- mensetmanusman 3y agoMultiple attempts at a 10% success rate increase the success rate.
- Uvix 3y agoThe math is more intuitive if you say it decreases the failure rate. i.e. if you try something with a 10% success rate 3 times, your odds are 1 - (0.9 ^ 3) = 27.1% chance of success.
- jefftk 3y agoIf it were just that then taking the tests three times at once would have a similar effect. Instead, it's mostly that you're measuring a quantity that's varying over time, and more samples gives you more chances for one of them to be at a time when the quantity is high.
- jefftk 3y agoThe tests are much more likely to successfully diagnose you if you take them near your peak viral load. Multiple tests over several days gives you more chances to sample near that peak.