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12-08-2014 03:15 PM

I would get competing risk for people with multiple hospitalizations. As I knew, sas9.4 is able to get competing risks for one event per person. Can I get competing risks for multiple events per person?

Thanks!

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12-10-2014 04:08 AM

Somehow, I find your wish a bit selfcontradicting.Using a competingrisk model means exactly that persons are not in risk of any of the outcomes when the first outcome has occured. A competingrisk model is therefore not the right model analyzing recurrent events.

But, what you can do is to model the recurrent events with a Cox-model using either time since last event. You can thereby have more events per person in a Cox-model, just restart the time at each event. Or you can have time since beginning of trial as underlying time axis, then you should have the last timepoint as a left-truncation on the time at risk (you can find an example here: SAS/STAT(R) 13.2 User's Guide)

The other eventtypes can be taken into account by constructing a timedependent covariate that counts numbers of the other event type.