What do you mean by lambda? Different texts use different notations, so
could you tell us in words what lambda is?
--- [email protected] wrote:
> Dear Statalisters,
>
> I am running a survival analysis. In this respect, does anyone know
> how we
> can calculate the lambda and its standard error after we obtain the
> following results?
>
>
> Exponential regression -- accelerated failure-time form
>
> No. of subjects = 40 Number of obs = 40
> No. of failures = 32
> Time at risk = 2059 LR chi2(1) = 4.35
> Log likelihood = -38.159406 Prob > chi2 = 0.0371
>
> -------------------------------------------------------------------
> _t | Coef. Std. Err. z P>|z| [95% Conf. Interval]
> ---+----------------------------------------------------------------
> group | 0.058095 .0266299 2.18 0.029 .0059 .1102
> _cons | 1.193251 1.342353 0.89 0.374 -1.437 3.824
> --------------------------------------------------------------------
>
> I am not sure about this output. 1/lambda = exp(1.19+0.06*group)?
> However,
> what about its standard error?
>
>
>
> Thank you in advance.
>
> Regards,
>
>
> Tiago
>
>
>
> *
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>
-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands
visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434
+31 20 5986715
http://home.fsw.vu.nl/m.buis/
-----------------------------------------
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