st: error messages while using the stgest command

[Victor Mauricio Herrera <vherrera@wisc.edu>]

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
                  r(198);"

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

The second error occurs when using gesttowb:
 
                 gesttowb
                 g-estimated hazard ratio *:  operator invalid
                 r(198);

My versions of these programs are:

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

Thanks,


VICTOR M. HERRERA MD. MS.
Research Assistant - Wisconsin Diabetes Registry
Population Health Sciences Department
University of Wisconsin
610 Walnut St. 626 WARF
Madison, WI 53726
(608) 265-3686
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