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I have two groups of patients who underwent a surgical procedure using two different valves (group A and group B). How can I compare survival according to different groups of age (up to 55; 56-65; 66-75; >75). Can you tell me how to plot the data and select columns for the analysisThanksGiovanni
XLSTAT offers two functions for modeling survival time using covariates: Cox proportional hazards model or Parametric survival regression for using a specified probability distribution.
Tutorials for both cases can be found here.
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