id author title date pages extension mime words sentences flesch summary cache txt cord-132120-u5s5heqm Dempsey, Walter The Hypothesis of Testing: Paradoxes arising out of reported coronavirus case-counts 2020-05-21 .txt text/plain 8195 579 64 While expanded testing is a laudable goal, selection bias will impact estimates of disease prevalence and the effective reproduction number until the entire population is sampled. Fourth, we show that cross-country comparisons are difficult at best with population size, sampling fraction, and data quality all interacting to impact null hypothesis testing. This points to a critical issue in the current media practices in communication of case-count data: two countries with the same testing strategy (i.e., E I [ρ I,Y ] equal) can yield wildly different estimates due to population size. Supposing COVID-19 positive individuals are 2 times more likely to get tested than those individuals who are COVID-19 negative, the question is "What is the sample size from a SRS that would yield equivalent MSE in the estimated prevalence?" Using the above MSE result, Meng showed the effective sample size is equal to n ef f ≤ ./cache/cord-132120-u5s5heqm.txt ./txt/cord-132120-u5s5heqm.txt