how many variables does coxph bootstrap have which variables are included in the glmnet predictions what is the correct size of the prediction matrix with the df in lsp how to evaluate the prediction matrix with a coxph model glmnet when do i run pec why does coxph model have df when is the prediction matrix wrong how to evaluate a coxph model bootstrap what is the error that pec bootstrap bootstrap when is the matrix used in bootstrap what is the error with the prediction matrix coxph prediction error why can't i load coxph model using lasso why does pec run bootstrap model how many variables are in coxph model how can i evaluate a coxph model in lasso glmnet how to run prediction matrix what is the value of age at dx in glmnet? when evaluating a coxph model coxph bootstrap definition