Hi:
Perhaps this post from earlier today will be useful:

http://r.789695.n4.nabble.com/Re-interpretation-of-coefficients-in-survreg-AND-obtaining-the-hazard-function-td3043160.html#a3043160

HTH,
Dennis

2010/11/15 Lorena Avendaño <mlorena.avendano@gmail.com>

> Dear R-users,
>
> I would like to fit a fully parametric proportional hazard model with a
> weibull baseline hazard and a logit link function. This is, the hazard
> function is: lambda_i (t) = lambda_0 (t) psi (x_i* beta)
>  where lambda_0 is a weibull distribution and psi a logistic distribution.
> Does someone know a package and/or function on R to do this?
>
> Thanks.
> --
> M.L. Avendaño
>
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>
>
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