RE: [NMusers] Truncated normal distribution for continuous covariate with known mean and standard error

2015-12-08 Thread Johansson , Åsa
Dear Yassine, I prefer the second option, where you simulate new ETAs until they fulfill your requirements. THETA(1) is the mean value of WT while ETA(1) is a random variable with variance OMEGA. You should just add the known mean value of WT (e.g. 70) as the initial estimate of THETA(1) and th

[NMusers] Error in 'finedata' utility program

2016-08-16 Thread Johansson , Åsa
Hi Nmusers, I've tried to use the utility program 'finedata' to create a new data set with additional, non-observation, time points to be used for prediction purposes. It seemed to work fine at first, but then I realised that the values for DV and MDV at the inserted data records differed from