Dear Bernard -


I would suggest you start with the Users Guide provided with your nonmem 
installation. For a basic models there are excellent examples covering the 
theory, implementation and code examples for how to construct the control 
stream.



For additional help there are a couple other resources that may provide useful 
(although the Users Guide is very thorough):



*         I would also suggest searching the NMusers archive - many problems 
have been solved over the years with snippets of code as well as solutions 
posted.

*         The accp pharmacometrics site has a couple case studies in the 
modeling section that include nonmem control streams. Be aware that they are 
slightly dated and refer to nonmem VI - though changes for your purposes would 
most likely be minor http://accp1.org/pharmacometrics/index.html

*         Some modeling environments such as Pirana offer 'template' control 
streams that you can use to start to get an idea of what is necessary.



Finally, if you are looking for more in-depth explanations about both theory as 
well as examples including control streams, Metrum Institute offers 
well-designed online independent study courses in population PKPD modeling. 
Courses are split into lecture and live demo (lab sessions) in which you can 
pick up a lot in 'proper' methodologies behind both constructing and 
troubleshooting your model. If you have little experience in modeling I would 
highly recommend the Essentials of Population PK-PD modeling and Simulation 
found here: http://training.metruminstitute.org/course/category.php?id=11



Best of luck,



Devin Pastoor

Clinical Research Specialist

University of Maryland, Baltimore

Center for Translational Medicine



-----Original Message-----
From: [email protected] [mailto:[email protected]] On 
Behalf Of Bernard Ngara
Sent: Thursday, March 21, 2013 8:58 AM
To: [email protected]
Subject: [NMusers] Single timepoint PKPD



NMusers

May you kindly assist? I am learning PKPD modeling. The problem is I intend to 
perform covariate modeling from a single timepoint per individual PKPD data of 
the Efavirenz drug using a single compartment mechanistic model. Covariates are 
genotype, sex, weight and age. What are the general features for such a control 
stream in NONMEM?

Bernard

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