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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72" style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b>…</b>> <b>On Behalf Of </b>William Flynn Wallace via extropy-chat<br><b>Subject:</b> [ExI] ;covid test<o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal><span style='font-size:18.0pt;font-family:"Comic Sans MS";color:black'>Report today: Thousands of BRits may be false negatives.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:18.0pt;font-family:"Comic Sans MS";color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:18.0pt;font-family:"Comic Sans MS";color:black'>Well, duh, if you don't have a perfect correlation and make a cutoff you are going to have false negatives and false positives. The question is: where do you set the cutoff? I assume that the worst thing is a false negative. For a false positive you test again. For false negatives? What? Anyone know?<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:18.0pt;font-family:"Comic Sans MS";color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:18.0pt;font-family:"Comic Sans MS";color:black'>bill </span><span style='font-size:18.0pt;font-family:"Comic Sans MS"'>w<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:18.0pt;font-family:"Comic Sans MS"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:18.0pt;font-family:"Comic Sans MS"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:18.0pt;font-family:"Comic Sans MS"'>Billw, there has never been a consensus on the balance of where cutoff line should be. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:18.0pt;font-family:"Comic Sans MS"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:18.0pt;font-family:"Comic Sans MS"'>We tend to blow off the false positive: you just test again. Sure. But then you spent the money for two tests and might have caused someone to go into isolation unnecessrily. Think of a scenario please where a false positive is far more serious than a false negative.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:18.0pt;font-family:"Comic Sans MS"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:18.0pt;font-family:"Comic Sans MS"'>spike<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:18.0pt;font-family:"Comic Sans MS"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:18.0pt;font-family:"Comic Sans MS"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:18.0pt;font-family:"Comic Sans MS"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:18.0pt;font-family:"Comic Sans MS";color:black'><o:p> </o:p></span></p></div></div></div></body></html>