Hello everybody, I am doing non linear mixed model. my code is as follow: proc nlmixed data=dataq1prev2 qpoints=4;
parms eta=2.02 etadiff=-0.32 tau=6.24
taudiff=0.9 gamma=-0.002 gdiff=0 sigma2=0.0007
d11=0.0022 d22=0.0009 d33=0.14;
num = ((eta + etadiff * group + n));
den = ((tau + t+ taudiff * group );
mean = num/den + gamma + gdiff * group ;
model reponse~ normal(mean,sigma2);
random t n ~ normal([0, 0],[d11,0,d22])
subject=vog out=eb;
run; I get error saying "NOTE: Execution error for observation 1." I will very appreciate any help, thank you
... View more