Re: [NMusers] Rounding errors with TRANSIT model

2010-08-11 Thread Leonid Gibiansky
Ann Try ADVAN6 or ADVAN8 or ADVAN13 . Also, TOL=3 is too small. Increase it to 6-7 or even 9, and also change to NSIG=3 SIGL=9 ($EST step, as recommended in the guide). Also, at least initially, I would remove ETAs from the third compartment and from one of the parameters (Q2 or V2) of the seco

[NMusers] Rounding errors with TRANSIT model

2010-08-11 Thread Ann Rigby-Jones
Dear All I'm trying to evaluate a transit model approach in an attempt to better describe early drug concentrations following intravenous injection (1 minute and 10 minute infusions) of a sedative-hypnotic drug. However, every minimisation attempt is terminated due to rounding errors (E=134).