I say "in theory" because this is only true if the test results are independent and uncorrelated, and I'm not sure that assumption holds for COVID tests (or medical tests in general). If you get a false negative because you have a low viral load, or because you have an unusual genet...
One thing to keep in mind: The processing times for travelers with negative tests was much shorter, with most of them being released into the boarding area in about a minute or so. In my case, it took a bit longer as the agent wanted a second set of eyes on both documents. Still, ...
Q: How are rapid antigen tests different from PCR tests? Is one better than another? Rapid antigen tests, which you can buy in most pharmacies, are great in specific circumstances and less good in others. Rapid antigen tests detect COVID-19 when people have a higher amount of virus particl...
PresidentDonald Trumphas touted the increase in U.S. testing capacity, even calling the country the "envy of the world" for how many tests it runs every day. However, the turnaround time of many of those tests, and arguably the most important kinds of tests, has gotten so lo...
246 tests and 1,144 cases on May 14, and 20,846 tests with a mere 393 new cases on July 14. Again, the virus hasn’t disappeared, but the expansion of testing, far from “creating” cases, has brought good news: In these states, it’s much less prevalent than it was two ...
Jingjing: No wonder. Hey, speaking of risks and delays, how's COVID testing where you live and where you work? 京晶:怪不得。嘿,说到风险和延误,你家和工作地的核酸检测情况如何? Mark: My classes are online this week. ...
How accurate are COVID tests now? A positive result on an at-home COVID test is very reliable, according to the CDC. However, a single negative result with an at-home test may not be accurate because you may have taken it before the virus reached detectable levels. ...
A rapid, at-home antigen test is a useful tool to have in your COVID-19 arsenal. But you need to know when and how to use these tests. If you have symptoms: If you have COVID-19 symptoms and test positive on an at-home test, you have COVID-19.You don’t need to get another...
COVID-19 tests, vaccines and treatments are expected to work on JN.1. Additionally, JN.1 doesn’t appear to be any more severe than previous COVID-19 strains. The CDC assesses that “at this time, there is no evidence that JN.1 presents an increased risk to public health...
Furthermore, since Breusch and Pagan (1979) and Shapiro and Wilk (1965) tests allowed to accept the null hypothesis of homoscedasticity and normality of residuals, models seemed well specified. However, due to the small sample, I preferred to adopt a conservative approach, by applying the HC2 ...