[R] survival analysis: interval censored data

[Terry Therneau]

You have still not given me enough information to reproduce your
problem.  "Why doesn't it include all years?"  I have no way of knowing,
since we have no data.

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halo david

when I use type= 'interval'

Call: survfit(formula = Surv(ingreso, fecha, estado, type = "interval")
~ 
    categoria)

and when I use just 

Call: survfit(formula = Surv(ingreso, fecha, estado) ~ categoria)

I don t know why when I use type = "interval" it does not survival
calculed for very year


regards