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Date:   Mon, 22 Jun 2009 16:10:47 -0700
Reply-To:   Shankar <shankar.stat@GMAIL.COM>
Sender:   "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:   Shankar <shankar.stat@GMAIL.COM>
Organization:   http://groups.google.com
Subject:   Re: SAS differential equations fitting problem
Comments:   To: sas-l@uga.edu
Content-Type:   text/plain; charset=ISO-8859-1

Is this glucose/insulin absorption model? what are X and l ?

I think you would need an initial/steady-state condition for X; For G and l, you already have data at t= 0, so they can be used as initial conditions;

at t=0, can you assume dG/dt = 0 ? i.e initially absorption rate is 0;

I suspect your model is incomplete, i,e. you might need another ODE for l;

Thanks, Shankar


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