Tuesday, January 31, 2023

Interpretation of Competing Risk with stcrreg

I'm new to using competing risk analysis and want to make sure I'm interpreting and using it correctly (given that I'm getting good result, I don't want to be mis-representing the data)
I am trying to use a competing risk (Stcrreg) analysis for an intervention in a clinical study. I am interested in the first 48 hours after randomization. I’ve coded my desired outcome as event=0 and have two competing risk events (event=2, precluding any further possibility of the desired outcome; event=1, impeding the desired outcome). So, if one group has the intervention (=1) and the other group does not get the intervention (=0) can I interpret the subhazard ratio as the probability of experiencing the desired outcome during the time period for the events coded?

Code:
stset time, failure(event==0)
stcrreg intervention, compete(event==1 2)

I come up with SHR = 2.997 (95% CI 1.46 – 6.15)

Is it correct to say that the probability of the desired outcome is 3 times more likely during the first 48 hours with the intervention?

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