From bela_b at gmx.net  Tue Mar  1 12:27:36 2005
From: bela_b at gmx.net (Bela Bauer)
Date: Tue Mar  1 12:27:43 2005
Subject: [Rd] Re: [R] H-F corr.: covariance matrix for interaction effect
In-Reply-To: <x2ll98joa0.fsf@biostat.ku.dk>
References: <421C6A88.3030907@gmx.net>
	<x2psyrcr84.fsf@biostat.ku.dk>	<x2acptpiqm.fsf@biostat.ku.dk>
	<x2ll98joa0.fsf@biostat.ku.dk>
Message-ID: <422451A8.80102@gmx.net>

Peter Dalgaard wrote:
> Just in case anyone was wondering, I think I now know what SAS is
> doing, and yes, it is a bug. 

I was still wondering. :-)
Now, this is quite some interesting news, since everyone here has been 
relying on SAS H-F corrections, and I don't think they'll be amused to 
know that they might've been wrong.

I've been glancing over to Rd, but I didn't see anything about it - do 
you have any code yet that I could look at to figure out what you do? It 
doesn't need to be complete yet, just something that will tell me about 
the algorithm...

Thanks

Bela


[Rd] Re: [R] H-F corr.: covariance matrix for interaction effect
Bela Bauer