I think that this is a new enhancement to Stata 9.
-dfbeta- now works for survival data just like for
-regress-.
I guess is time to upgrade.
Ricardo.
--- Steinar Fossedal <[email protected]> wrote:
> Yes, I found the -dfbeta- command, which as far as I
> can tell works only
> after -regress-. I also dug up -ldfbeta- which works
> after logit, but
> none suited for surivial time data. However,
> following links in the
> helpfiles you suggested I found that dfbetas can
> also be calculated
> through -predict-, although only one variable at a
> time.
> I'm puzzled as to why it doesn't say so in the
> helpfile for -predict- or
> in the chapter concering predict after streg. I'm
> still using stata8
> documentation though, it might be updated in the
> more recent manuals.
>
> Thanks for your help.
>
> -Steinar
>
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On
> Behalf Of Ricardo
> Ovaldia
> Sent: 7. oktober 2005 14:44
> To: [email protected]
> Subject: Re: st: dfbeta for survival time data
>
> --- Steinar Fossedal <[email protected]>
> wrote:
>
> > Hello,
> > I'm fitting a parametric survival time model and
> I'm
> > trying to figure
> > out if any of my observations have a unreasonable
> > large effect on the
> > estimates. I've been looking into the dfbeta
> > commands, but cannot seem
> > to find one for use with survival time data.
>
>
> In Stata 9, according to the manual, the command
> -dfbeta- should work. Type -help dfbeta- to see the
> syntax.
>
> Ricardo.
>
>
> Ricardo Ovaldia, MS
> Statistician
> Oklahoma City, OK
>
>
>
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Ricardo Ovaldia, MS
Statistician
Oklahoma City, OK
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