Trouble with Stepwise Covariate Search

Phoenix Certara Forums Modelling and Simulation
1

I am not able to get the Covariate Search Stepwise to run. I get the return:

No output found
Add GluFX as power NO FREEZE, COV SEARCH : cstep00
Start 30/09/2016 12:49:51 Run: 0:00:05 nSubj: 36 nObs: 1390
Iteration -2LL

I have selected the proper “run mode,” defined all covariates using fcovariate(), and specified all covariate effects using (enable = c()).

If I remove all of the enable() 's, I am able to get the model to run as “simple.”

Am I missing something?

Thanks

2

Can you please send the code you wrote. I suspect something is wrong there as simple mode, should work with the enable statement. A snapshot of the covariate relationship you select will be also useful to be sure you select something and no blank covariate

best Regards

Serge

3

Hi Serge,

I was able to figure it out - there was something wrong in my code. The reason it wasn’t immediately obvious is the compiler was reporting an error (-2LL is NaN or something of the like), though this error wasn’t shown in a pop-up, or obvious otherwise.

Thanks for the help. Cheers

Justin