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st: Individual risks scores using competing risks
From
Lucy Riley <[email protected]>
To
[email protected]
Subject
st: Individual risks scores using competing risks
Date
Wed, 11 Sep 2013 15:41:58 +0100
Hello,
I am currently trying to build a model using competing risks which will
give individual risk scores to patients.
I am trying to use the Fine and Gray approach to build the model, using
the Stata command STCRREG I am able to get the sub-distribution hazard
ratios and beta coefficients for the score but I'm having trouble
converting these into individual scores.
As far as I can see the best method is to calculate an individuals
cumulative incidence function (CIF) which can be done using the formula;
CIF(t|X) = 1 - exp( - exp(X * beta^t. H0(t) ) where H0(t) is the
cumulative sub-distribution hazard for the event at time t.
My main problem is that I haven't come across any methods for finding
H0(t).
If anyone knows a way to calculate this value or has any references that
might be useful, please would you send them on to me?
Thank you!!
Lucy
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