Re: [R] Getting the C-index for a dataset that was not used to generate the logistic model

Professor Harrell, Thanks for your lightning-fast reply. It was extremely helpful, and pointed me exactly to where I needed to go to solve my problem. For others reading, my problem was that I was incorrectly dealing with the validation data. I tried to do this to generate predictions from a pre

Re: [R] Getting the C-index for a dataset that was not used to generate the logistic model

Kyle Werner wrote: Does anyone know how to get the C-index from a logistic model - not using the dataset that was used to train the model, but instead using a fresh dataset on the same model? I have a dataset of 400 points that I've split into two halves, one for training the logistic model, and

[R] Getting the C-index for a dataset that was not used to generate the logistic model

Does anyone know how to get the C-index from a logistic model - not using the dataset that was used to train the model, but instead using a fresh dataset on the same model? I have a dataset of 400 points that I've split into two halves, one for training the logistic model, and the other for evalua

[R] Getting the C-index for a dataset that was not used to generate the logistic model

Does anyone know how to get the C-index from a logistic model - not using the dataset that was used to train the model, but instead using a fresh dataset on the same model? I have a dataset of 400 points that I've split into two halves, one for training the logistic model, and the other for evalua