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clinic
2007 Apr 25
0
Use of Lexis function to convert survival data to counting format
I'm trying to convert a dataset from the time-independent analysis form
> head(addicts)
id clinic status survtime prison meth clinic01
1 1 1 1 428 0 50 1
2 2 1 1 275 1 55 1
3 3 1 1 262 0 55 1
into the "counting data format" necessary to perform extended Cox regression.
I got survSplit() to work, but it appears to have a problem wi...