Can someone tell me where the beta values in the "parms" line of the SAS routine at the top of page 5168 come from? Are they estimates to start the iteration? Here's the code from the SAS manual: proc nlin data=theop; parms beta1=-3.22 beta2=0.47 beta3=-2.45; cl = exp(beta1); ka = exp(beta2); ke = exp(beta3); mean = dose*ke*ka*(exp(-ke*time)-exp(-ka*time))/cl/(ka-ke); model conc = mean; ods output Anova=aovred(rename=(ss=ssred ms=msred df=dfred)); run;
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