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st: error messages while using the stgest command

From   Victor Mauricio Herrera <>
To   statalist <>
Subject   st: error messages while using the stgest command
Date   Wed, 02 Jun 2010 17:26:14 -0500

Hi all, 

I wonder if anyone could shed light on the following. I consistently get two error messages while using the stgest command (Stata Journal 2002, 2(2):164-182) in Stata/MP 11.0.  The first one happens after the causal survival ratio is reported:  

                "Note - these estimates should be confirmed with an
                  interval bisection search by omitting the step option
                  option ( not allowed

I guess this has something to do with the instructions to graph the psi-by-z graph.

The second error occurs when using gesttowb:
                 g-estimated hazard ratio *:  operator invalid

My versions of these programs are:

                   which gesttowb
                   *! Version 1.0         (SJ2-2: st0014)
                   which stgest
                   *! version 5.5 JACS/KT g-estimation, June 2002    (SJ2-2: st0014)


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