[R] Help with improveProb function in Hmisc in R

[kirsada]

Please bear with me, I am very new to R.

My question is regarding the use of the improveProb function in the Hmisc
package. I have two logistic models, the only difference being that the
second model contains my novel marker of interest. I am trying to calculate
NRI and IDI to compare models.

I have the PredRisks for both models - PredRisk1 and PredRisk2, and my
outcome is disease 0/1. How do I define this in R in order to run

improveProb(x1, x2, y)?

Many thanks in advance



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