On Wed, 15 Oct 2008, Peter Dalgaard wrote:
> jpl wrote:
> Hello,
>
> I would like to extract the standard error for the coefficients
> returned when using survreg. Does anyone know how to do this?
Apparently, it is
summary(mymodel)$table[,2]
In order not to compute on the internal structure but to use extractor
methods, you could use
vcov(mymodel)
and
sqrt(diag(vcov(mymodel)))
for the covariance matrix and the standard errors respectively.
(Why, oh why, can't Terry allow coef(summary(...)) like we have in
lm/glm??? Oh well...)
Is that desired or just a by-product? From the description of the coef()
generic, it seems that coef() should only extract coefficients (not their
standard errors, Wald statistics, and p values).
Z
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