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st: Problem with -metareg-


From   "Tiago V. Pereira" <tiago.pereira@incor.usp.br>
To   statalist@hsphsun2.harvard.edu
Subject   st: Problem with -metareg-
Date   Tue, 10 Feb 2009 16:41:43 -0200 (BRST)

Dear Statalisters,

Using my whole dataset (with several others variables) I type:

. metareg logor, wsse(selogor) reml

and obtain:

numerical derivatives are approximate
nearby values are missing
numerical derivatives are approximate
nearby values are missing
numerical derivatives are approximate
nearby values are missing
could not calculate numerical derivatives
missing values encountered
r(430);

Then, I do the following: clear, inpute the same data but only the two
variables and obtain sucessfully the result I am looking for:

clear


*/---------START-------------
input logor selogor
.0800427 .8641729
.2786815 .1604731
-1.400893 1.19818
.537752 .5122404
end
metareg logor, wsse(selogor) reml
*/--------END--------------------

Meta-regression                                       Number of obs  =    
  4
REML estimate of between-study variance               tau2           =    
  0
% residual variation due to heterogeneity             I-squared_res  =  
0.00%
With Knapp-Hartung modification
------------------------------------------------------------------------------
       logor |      Coef.   Std. Err.      t    P>|t|     [95% Conf.
Interval]
-------------+----------------------------------------------------------------
       _cons |    .268642   .1496053     1.80   0.170     -.207469   
.7447529
------------------------------------------------------------------------------

Does anyone have a guess about what is going on with -metareg- (the most
recent version)?


Cheers!

Tiago



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