Programming the statistical procedures from SAS

can phreg modeling with competing risks be run with recurrent events?

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New Contributor nov
New Contributor
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can phreg modeling with competing risks be run with recurrent events?

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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Posts: 287

Re: can phreg modeling with competing risks be run with recurrent events?

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.

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