09-11-2014 05:25 PM
Hey, I wish to simulate the following longitudinal model, and help?
I wish to ask if you have a SAS code to simulate longitudinal data or where I could find it.
I just wish to simulate this: Y_it=apha_i + .5*X+ epsilon_it
Let t=be 4 time points
where Y_it denotes measure for subject i at time t
alpha_i is intercept for subject i(random effect)
X baseline covariates
epsilon is error term i at time t.
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