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st: output logistic regression


From   "J. Heukelbach" <heukelbach@web.de>
To   statalist@hsphsun2.harvard.edu, Liana Ariza <liariza@hotmail.com>
Subject   st: output logistic regression
Date   Thu, 28 Sep 2006 19:44:54 -0300

Dear colleague,
while doing logistic regression with STATA, we received the following
output (see below).
What does this mean "note: 304 failures and 24 successes completely
determined"?
When we check the variables separately for association with the outcome
variable, we receive the usual output.
The odds ratios are very extreme, does this cause any problem in the model?
Best regards and thank you very much,
Jorg Heukelbach
Federal University of Cear=E1
Brazil


logistic  tung0_heavy  educ_2_mvh houstyp_m01_p  houseflo_2_mvh
toilets_2 watersup_2_p  wastedis_mvh houlight_2 pig dog  cat
   > _mvh wareshoe_2_p restinp_2_p soaptype_2_p causjig2_sm_2_p
preve2_mvh  treat_01_mvh

Logistic regression                               Number of obs
=3D        330
                                                    LR chi2(16)     =3D
177.07
                                                    Prob > chi2     =3D
0.0000
Log likelihood =3D -3.387e-08                       Pseudo R2       =3D
1.0000

---------------------------------------------------------------------------=
---
   tung0_heavy | Odds Ratio   Std. Err.      z    P>|z|     [95% Conf.
Interval]
-------------+-------------------------------------------------------------=
---
    educ_2_mvh |   2.08e+09   1.68e+13     0.00   0.998
0           .
houstyp_m0~p |   1.15e-06          .        .       .
=2E           .
houseflo_2~h |   .0026595          .        .       .
=2E           .
     toilets_2 |   .0008542          .        .       .
=2E           .
watersup_2_p |   1.24e-06          .        .       .
=2E           .
wastedis_mvh |    8687.32          .        .       .
=2E           .
    houlight_2 |   8.01e+09          .        .       .
=2E           .
           pig |   3.95e+21   4.31e+25     0.00   0.996
0           .
           dog |   1804.547          .        .       .
=2E           .
       cat_mvh |   .0148009          .        .       .
=2E           .
wareshoe_2_p |    .000098          .        .       .
=2E           .
   restinp_2_p |   4.62e-13          .        .       .
=2E           .
soaptype_2_p |   6.59e-13          .        .       .
=2E           .
causjig2_s~p |    1639938          .        .       .
=2E           .
    preve2_mvh |   68868.13          .        .       .
=2E           .
treat_01_mvh |    .000186          .        .       .
=2E           .
---------------------------------------------------------------------------=
---

note: 304 failures and 24 successes completely determined.



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