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Can you get a confidence interval of an independent variable from
directly out of PROC LOGISTIC?

I'm using LOGISTIC to model prob (survival) as a function of a
continuous parameter (TNF50) 

I'm using a basic model statement SURV = TNF50

I need to estimate TNF50 with 95%CIs for various specified survival
probabilities

I can easily use the parameter estimates produced to work backward to
TNF50 but how do I get the 95%CIs for TNF50?

I believe you can do this using PROC PROBIT with the INVERSECL option
but I can't see this in LOGISTIC

Any thoughts anyone?

Thanks

Alison