Re: [NMusers] Time-to-event analysis with $DES

2011-03-24 Thread Nick Holford
Hyewon, Sorry -- I just realized that EFF is not the drug effect but 1-drug effect so that it has a value of 1 when AUC is zero. Please ignore my remarks about EFF being zero when AUC is zero in my comments below and consider this code to describe the effect of AUC on hazard: HAZNOW=LAMD*AL

Re: [NMusers] Time-to-event analysis with $DES

2011-03-24 Thread Hyewon Kim
Dear all, Thank you for your thoughtful advice. It helps a lot. Hyewon. On Thu, Mar 24, 2011 at 1:53 AM, Nick Holford wrote: > Hyewon, > > Sorry -- I just realized that EFF is not the drug effect but 1-drug effect > so that it has a value of 1 when AUC is zero. Please ignore my remarks about >

[NMusers] About DoLoop in NONMEM

2011-03-24 Thread Liu Dongyang
Dear NonMEM users, I am constructing a transduction model to capture disease onset time-delay using NonMEM. Because I need to use too mamy compartments (means too much ODE) to handle this delay, I want to use DoLoop to save a little room. But I can not find a way to use it in $DES block. The

RE: [NMusers] About DoLoop in NONMEM

2011-03-24 Thread Ribbing, Jakob
Dear Liu, In nonmem you can not define differential equations through a loop; each has to be explicitly written out. However, I notice that you have the same rate of transit among all of your (transit) compartments. Therefore, an analytical solution would be the most efficient way of solving