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RE: CMT Remapping

From: Bill Denney <wdenney>
Date: Tue, 23 Jan 2018 18:58:29 -0500

Hi Leonid,

Thanks, you're right that I'm making it more complicated than needed. I
like the CMT1, CMT2, ... CMTALL solution.

Related to my other post this afternoon with $ABBR, I'm trying to minimize
parameter name recoding, too.



-----Original Message-----
From: Leonid Gibiansky [mailto:lgibiansky
Sent: Tuesday, January 23, 2018 5:46 PM
To: Bill Denney <wdenney
Subject: Re: [NMusers] CMT Remapping

Hi Bill,

I do not think this is possible, but you are making things more complicated
than needed. You can slice the data set as needed using IGNORE/ACCEPT
options. For analytical ADVAN models, you often do not need CMT item, and i=
needed, you can introduce extra columns CMT1, CMT2, CMT3, and CMT4, for eac=
of the 4 drugs, and CMTALL for the combined model. So the only thing that
would be needed is to re-code parameter names and theta-eta-eps indices whe=
you combine 4 models in one. This step would be needed any way.


On 1/23/2018 2:26 PM, Bill Denney wrote:
> Hi,
> In a follow-up to the previous email, I’m still working on the sa=
> model where I need to track 4 drugs simultaneously.
> For this, I’m working from a single data file, and my initial mod=
> is drug 1 (first control stream), drug 2 (second control stream), drug
> 3 (third control stream), drug 4 (fourth control stream). As I
> progress through modeling, I intend to combine to a single control
> stream with all 4 drugs.
> I’d like to be able to speed up my modeling by taking advantage o=
f the
> algebraic ADVAN/TRANS combinations while feasible, but I would also
> like to keep working within the same data file. Is there any method
> to remap compartment numbers in a model file to an ADVAN-expected
> compartment?
> I’d like to do something like the following (which doesn’=
t work):
> Where CMTMAP would remap compartment number 6=1, 11=2, 12=3, and 13=
> for the expected ADVAN numbering.
> Thanks,
> Bill
> ----------------------------------------------------------------------
> --
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> lliam
> S. Denney, PhD*
> Chief Scientist, Human Predictions LLC
> +1-617-899-8123
> wdenney
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Received on Tue Jan 23 2018 - 18:58:29 EST

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