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Re: st: cox regression missing standars errors, z-values etc.


From   Ricardo Ovaldia <[email protected]>
To   [email protected]
Subject   Re: st: cox regression missing standars errors, z-values etc.
Date   Wed, 26 Jan 2005 06:39:16 -0800 (PST)

There is an FAQ, written by Mario Cleves of Stata,
that could give you some ideas about what may be
happening with your data. See:

http://www.stata.com/support/faqs/stat/coxmiss.html

Ricardo.

--- Verena Schoenleber
<[email protected]> wrote:

> dear statalist,
> 
> i would really appreciate your help: i am running
> stcox (multivariate)
> and in my results, i get missings for z-values,
> standard errors etc.:
> 
> . stcox wardur coldwar wartype, tvc(hgmulti4 democ
> gdpcp gini lifeex
> logpop)
> 
> Cox regression -- no ties
> 
> No. of subjects =           84                    
> Number of obs   =    
>   133
> No. of failures =           33
> Time at risk    =          639
>                                                   
> LR chi2(9)      =    
>  4.16
> Log likelihood  =    4.694e-06                    
> Prob > chi2     =   
> 0.9006
> 
>
------------------------------------------------------------------------------
>           _t |
>           _d | Haz. Ratio   Std. Err.      z   
> P>|z|     [95% Conf.
> Interval]
>
-------------+----------------------------------------------------------------
> rh           |
>       wardur |   .3212128          .        .      
> .            .      
>     .
>      coldwar |   .2205907          .        .      
> .            .      
>     .
>      wartype |          1          .        .      
> .            .      
>     .
>
-------------+----------------------------------------------------------------
> t            |
>     hgmulti4 |          1          .        .      
> .            .      
>     .
>        democ |   3.416269          .        .      
> .            .      
>     .
>        gdpcp |   1.000041          .        .      
> .            .      
>     .
>         gini |   .5410106          .        .      
> .            .      
>     .
>       lifeex |   .5015777          .        .      
> .            .      
>     .
>       logpop |   1.297101          .        .      
> .            .      
>     .
>
-----------------------------------------------------------------------
> 
> can anyone tell me what to do??
> thank you, 
> verena sch´┐Żnleber
> -- 
> Cherisystr. 16
> 78467 Konstanz
> Germany
> 0049/7531/56599
> 
> 
> *
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> *  
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> *   http://www.stata.com/support/statalist/faq
> *   http://www.ats.ucla.edu/stat/stata/
> 


=====
Ricardo Ovaldia, MS
Statistician 
Oklahoma City, OK


		
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