Re: [R] How to assign fixed beta coefficients in lrm for external validation

On Jun 23, 2009, at 6:28 AM, jeweetwel wrote: Hi, I am planning to externally validate a logistic prediction model in a new cohort. Outcome is mortality. The betacoefficients were derived from a previous published article. It seems not possible in R to assign fixed beta coefficients to p

[R] How to assign fixed beta coefficients in lrm for external validation

Hi, I am planning to externally validate a logistic prediction model in a new cohort. Outcome is mortality. The betacoefficients were derived from a previous published article. It seems not possible in R to assign fixed beta coefficients to predictors like lrm (death ~ intercept+beta1*var1+beta2*v