Stratified analysis is a powerful statistical approach that allows you to test for confounding and interaction, but unlike logistic regression, it is quite simple and doesn’t distance you from your data. You can ‘see’ the associations and enjoy the insights gained from analysis.This approach is useful when you are interested in testing association between two categorical variables – say exposure and disease – by adjusting for a third categorical variable. If done correctly, it also enables you t

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Conducting stratified analysis to test for confounding and interaction

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Statulator is a free on-line statistical calculator that conducts statistical analyses, interprets the results, and makes suggestions for presenting them in reports, journal articles and dissertations. - See more at:

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