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Re: st: missing factor variables in table of estimates

From (Brendan Halpin)
Subject   Re: st: missing factor variables in table of estimates
Date   Sat, 03 Mar 2012 15:24:04 +0000

I'm having a related difficulty as the following code demonstrates:

   use, clear
   poisson art i.fem phd
   est store PRM
   nbreg art i.fem phd
   est store NBRM
   est table PRM NBRM

This generates the following, where the nbreg model can't see the 1.fem
parameter, but the poisson model can. 

    Variable |    PRM          NBRM     
art          |
         fem |
          0  |     (base)      (empty)  
          1  | -.24280475      (empty)  
         phd |  .08183624    .08529713  
       _cons |  .37346521    .36445355  
lnalpha      |
       _cons |              -.57963612  

The problem doesn't arise if I don't use factor notation.

I note that poisson and nbreg handle reporting parameter estimates in
different ways; perhaps this is a consequence of that.

Brendan Halpin,   Department of Sociology,   University of Limerick,   Ireland
Tel: w +353-61-213147  f +353-61-202569  h +353-61-338562;  Room F1-009 x 3147    ULSociology on Facebook:         twitter:@ULSociology
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