hello, I want to know as mortality in different families of epiphytes after selective logging in the forest I want to make a survival analysis with left and right censored data. My study begins in 2004 but I have many individuals who enter the study in 2007 I have tried this: surara<-survfit(Surv(fecha,estado)~categoria) fecha= time
estado= dead categoria= control and experimental but it is working just with right censored data [[alternative HTML version deleted]]
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