Re: st: stcox output: p-value and CI don't agree

[Michael McCulloch <mm@pinest.org>]

Thank you Phil. In this case, it's the hazard ratio that was 
obtained, and the 95% CI includes one. The column header is displayed 
that way because I bootstrapped the standard errors.

I appreciate your reply, and apologize for not specifying that point.
Michael


> I don't see the contradiction.
>
> Presumably you estimated the coefficient using the -nohr- option? 
> So you get the log hazard ratio reported rather than the hazard 
> ratio.
> The P value is less than 0.05, the 95% CI does not cross zero. 
> Reject the null either way.
>
> Phil
>
>
>
>
>
> At 11:09 AM 8/08/2007, you wrote:
>
> > Hello,
> > I've obtained contradictory p-value and 95% confidence interval from -stcox-.
> > I'm puzzled as I've not seen this before in my studies, and not 
> > sure about how to further explore these perplexing results. I'd 
> > appreciate any pointers.
> >
> > ------------------------------------------------------------------------------
> >              |   Observed   Bootstrap                         Normal-based
> >              |      Coef.   Std. Err.      z    P>|z|     [95% 
> > Conf. Interval]
> > -------------+----------------------------------------------------------------
> >          tcm |   .7626117   .2860169     2.67   0.008     .2020288 
> > 1.323195
> > ------------------------------------------------------------------------------
> >
> > --
> >
> > Michael McCulloch
> > Pine Street Foundation
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