Hello everyone,  I am a very new user of R and I have a query about the cuminc function in the package cmprsk. In particular I would like to verify that I am interpreting the output correctly when we have a stratification variable.  Hypothetical example:  group : fair hair, dark hair fstatus: 1=Relapse, 2=TRM, 0=censored strata: sex (M or F)  Our data would be split into:  Fair, male, relapse Dark,male, relapse Fair, female, relapse Dark, female, relapse  Fair, male, TRM Dark,male, TRM Fair, female, TRM Dark, female, TRM  Fair, male, censored Dark,male, censored Fair, female, censored Dark, female, censored  Am I correct in thinking that the 2 "Tests" which will be printed by R tell us (i) if there are significant differences between those with fair hair and those with dark hair as regards cumulative incidence of relapse [taking into account sex differences] (ii) if there are significant differences between those with fair hair and those with dark hair as regards cumulative incidence of TRM [taking into account sex differences] ? The âestâand âvarâvalues are the same regardless of whether we include a stratification variable or not.  If we do not include a stratification variable the âtestsâ results will be different to those when a stratification variable is included and they test (i) if there are significant differences between those with fair hair and those with dark hair as regards cumulative incidence of relapse (ii) if there are significant differences between those with fair hair and those with dark hair as regards cumulative incidence of TRM.  Just thought Iâd double check. Many thanks, Kim
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