st: Bootstrapping for model validation

[Suraj Sharma <suraj.sharma@utoronto.ca>]

Dear Statalist - I would appreciate your help as a newcomer to Stata. I need to internally validate a Cox regression model using bootstrapping and obtaining a Harrells C-statistic. I know this requires the generation of a program but am unsure as to how to proceed with this. Any help would be appreciated. 

Suraj Sharma
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