st: Frailty or Heterogeneity in a Cox Regression (stcox)

[damien bernard de walque <dbdewalq@midway.uchicago.edu>]

dear statalist:

I am interested by implementing a frailty/heterogeneity model to the
Cox regression (stcox)for survival analysis, using a gamma distribution
for the heterogeneity parameter. 
Does anybody have/know of an ado file that would implement this?
 
thanks so much!
damien
 




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