[R] Fitting weibull and exponential distributions to left censoring data

[Therneau, Terry M., Ph.D.]

Brostram wrote
> The survreg function cannot fit left-censored data (correct me if I am wrong).
in response to my suggestion to use that routine.

 You are wrong.  Try reading the help file for survreg, or the references given there.
The survreg function does not fit left-truncated data, however.

  (As the author of the survival routines, I have a fairly good idea of what they can do.)

  Terry Therneau