what is normal deviation of cox model? how does cox regression work when to use cox regression survival analysis what is meant by accuracy in the accuracy of a cox regression model? what is the correct way to use a cox model in survival analysis r what do i calibrate a cox regression how accurate is a cox regression model which of the following is a method used to compare the predicted and actual risk of event in each individual group? how do you calculate survival how to perform Cox regression what is the best method to calibrate a cox model? what methods should i use when comparing the predicted risk and the actual risk how to use cox regression what is meant by the mean follow up period in r how to use cox regression models for survival analysis how to calibrate cox model what is the method used to calibrate a cox model in r which method do you use to compare the predicted and actual risk in each risk group in r? what is the best way to calibrate a cox model? how do i measure the accuracy of the cox regression model