You know that's just an article providing an overview, right? It's not the official source of excess mortality statistics.
For that, each country maintains an official group that has access to death certificates and other records when preparing statistics. The figure I quoted, for instance, is from the South African Medical Research Council, who publish their methodology. There's also EuroMOMO and many others.
Did you really think that statisticians and scientists have just magically forgotten about how to do basic statistics, for decades, when preparing these reports?
Why should I put any weight to statistical results that are made with some unknown "formula" and is not presented in a standard way.
Instead of using the normal measures of mean, average, standard deviation and percentiles, we just used "formula" and voila, here is answer. Ok I'm going to continue to be sceptical of such results..
For that, each country maintains an official group that has access to death certificates and other records when preparing statistics. The figure I quoted, for instance, is from the South African Medical Research Council, who publish their methodology. There's also EuroMOMO and many others.
Did you really think that statisticians and scientists have just magically forgotten about how to do basic statistics, for decades, when preparing these reports?