[Why bother with regression models?].
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In the last article, you learned about the interpretation of survival curves. This article is about the comparison of "survival" - or the time to any defined event. Two survival curves can be summarized with the hazard ratio, which is discussed in more detail in this article. In order to compare the "survival"of two treatment groups - particularly in non-randomised studies - additional variables (potential confounders) must be taken into account. This is done using a regression model, the so-called Cox-regression. After reading this article, hopefully these terms are more familiar to you.
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