[R-sig-ME] binomial fixed-effect p-values by simulation
Ken Beath
ken at kjbeath.com.au
Sun Aug 24 09:30:46 CEST 2008
On 24/08/2008, at 2:16 AM, Daniel Ezra Johnson wrote:
> What would be the difference between simulating the z-statistic (if
> I'm getting this, it would be determining what proportion of the
> simulations have a z-statistic as large as the one from the observed
> data) versus doing the same thing with the difference of
> log-likelihoods)?
>
> One difference I see is that with the z-statistic approach there is no
> need to fit a null model, only the alternative model (to data
> generated by the null model)?
>
> D
>
They should produce similar results and which is better is probably of
theoretical rather than practical interest.
I will try this with a commercial program I have that does both.
Ken
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