Re: VPC for non-uniform sampling

From: Indrajeet Singh Date: January 10, 2012 technical Source: mail-archive.com
you could try creating uniformly distributed time points in a new data set covering the whole time range in your observed data set and repeat the simulation for 100-200 times for 100 subjects or whatever number you think is reasonable for your study population size. New data set can be easily created in R using few lines of codes. Best Jeet
Quoted reply history
On Tue, Jan 10, 2012 at 4:11 PM, Ayyappa Chaturvedula < [email protected]> wrote: > Dear expert users,**** > > ** ** > > I am working on a dataset where subjects were sampled at different visits > at random. I have developed a model for the data but not sure how to do a > VPC as they do not have the same sampling scheme. I appreciate some > guidance in this. **** > > > Regards,**** > > Ayyappa**** > -- Indrajeet Singh,PhD Sr. Clinical Pharmacokineticist Abbott Labs, North Chicago, IL
Jan 10, 2012 Ayyappa Chaturvedula VPC for non-uniform sampling
Jan 10, 2012 Jean Lavigne RE: VPC for non-uniform sampling
Jan 10, 2012 Indrajeet Singh Re: VPC for non-uniform sampling
Jan 10, 2012 Nick Holford Re: VPC for non-uniform sampling
Jan 11, 2012 Norman Z Re: VPC for non-uniform sampling
Jan 11, 2012 Martin Bergstrand RE: VPC for non-uniform sampling
Jan 12, 2012 Emmanuelle Comets Fwd: RE: VPC for non-uniform sampling
Jan 13, 2012 Diane Wang RE: RE: VPC for non-uniform sampling
Jan 14, 2012 Diane Wang RE: RE: VPC for non-uniform sampling