*change name of path to read in fulldata.dat
infile pubid entry exit event p1 p2 p3 p4 per1234 using C:\mikefolder\mikeFolder\survivalmethods\programsforweb\Figures\fulldata.dat
stset exit, failure(event) enter(entry)
streg p1 p2 p3 p4, distribution(weibull) noconstant nohr time
*the command will fit a conventional weibull model to the full data for all
*four periods providing estimated betas for p1-p4, sigma (1/p), and log likelihood