Re: Coronavirus Tests per Case: How many tests to find one COVID-19 case? (2020-US-EPO-631)Bubble Plot for Total Coronavirus Cases and Deaths in 10 Countries (April 21, 2020)
In our first bubble plot the Y-axis is total coronavirus cases and X-axis the number of days since cases totaled 10,000 or more. Total coronavirus cases in the US grew exponentially to 650,000 cases leaving a trail of blue bubbles.
In our second bubble plot the Y-axis is total deaths caused by COVID-19 and X-axis number of days since deaths totaled 100 or more. American deaths grew exponentially to 25,000.
Currently, COVID-19 related deaths total 155 K and coronavirus cases 4.7M, six and seven times their totals less than four months ago.
Re: Coronavirus Tests per Case: How many tests to find one COVID-19 case? (2020-US-EPO-631)Bubble Plots for Coronavirus Deaths and Case Fatality Rates (April 23, 2020)
These bubble plots are animated displays of online COVID-19 coronavirus mortality data for ten countries including the US, Italy, Spain, France and Germany.
In our first bubble plot, the Y-axis is the total number of deaths caused by COVID-19 and X-axis the number of days since deaths first totaled 100. Bubbles are proportional in size to daily deaths
In our second bubble plot, the Y-axis is the case fatality rate equal to total deaths caused by COVID-19 divided by total coronavirus cases. The X-axis is the number of days since deaths first totaled 100.
Currently, the US case-fatality rate equals 155 K COVID-19 deaths divided by 4.7 M coronavirus cases or 3.3%.
Coronavirus Tests per Case: How many tests to find one COVID-19 case? (2020-US-EPO-631)Douglas Okamoto, Management Consulting Biostatistician, Data to Information to Knowledge to Wisdom
The purpose of this poster presentation is to display COVID-19 morbidity and mortality data available on-line from Our World in Data whose contributors ask the key question: “How many tests to find one COVID-19 case?”
We use SAS JMP Analyze to help answer the question. Smoothing test data from Our World in Data, yields seven-day moving average or SMA(7) total tests per thousand in five countries for which coronavirus test data are reported: Belgium, Italy, South Korea, the United Kingdom and United States.
Similarly, seven-day moving average or SMA(7) total cases per million of were derived using the Time Series Smoothing option. Coronavirus tests per case were calculated by dividing smoothed total tests by smoothed total cases and multiplying by a factor of 1,000. These ratios of smoothed tests to smoothed cases were themselves smoothed.
Additionally, Box-Jenkins ARIMA(1,1,1) time series models were fitted to smoothed total deaths per million to graphically compare smoothed case-fatality rates with smoothed tests per case ratios.
Data VisualizationePosterPredictive Modeling
