[R] differences between survival models between STATA and R

[JPF]

Dear Community,

I have been using two types of survival programs to analyse a data set.

The first one is an R function called aftreg. The second one an STATA
function called streg.

Both of them include the same analyisis with a weibull distribution. Yet,
results are very different. 

Shouldn't the results be the same?

Kind regards,
J

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