Selection bias in clinical sciences: Difference between revisions

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* Use at least 1000 subjects in the simulation over the 180 days (historically, the study size was 80,000).
* Use at least 1000 subjects in the simulation over the 180 days (historically, the study size was 80,000).


* Statistics used are to be the Kruscal statistic for the analysis of multiple groups, with the boolean study outcome variable whether the subject got Covid-19 during the study period, analyzed versus category. If the programming language does not have a statistical package for such a test, calculation of the Kruscal H statistic may be used, since any values of H over about 50 are considered very highly indicative of significant group difference. A description of that test is found at [[https://en.wikipedia.org/wiki/Kruskal%E2%80%93Wallis_one-way_analysis_of_variance Kruscal-Wallis test]].
* Statistics used are to be the Kruskal statistic for the analysis of multiple groups, with the boolean study outcome variable whether the subject got Covid-19 during the study period, analyzed versus category. If the programming language does not have a statistical package for such a test, calculation of the Kruskal H statistic may be used, since any values of H over about 50 are considered very highly indicative of significant group difference. A description of that test is found at [[https://en.wikipedia.org/wiki/Kruskal%E2%80%93Wallis_one-way_analysis_of_variance Kruskal-Wallis test]].


* You should get a statistical result highly favoring the REGULAR group.
* You should get a statistical result highly favoring the REGULAR group.
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