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bb24
2017 Aug 11
0
Cox model with time-dependent coefficients
...e overall test for each categorical variable after applying the Cox.zph function.
The second, and currently more important question for me is:
After fitting my model based on a training set is it possible to make a prediction based on a new testset? Since I use an interaction between the covariate BS24 and the stratification by time group on the right handside of my formula (see code in link), I'm a bit confused how prediction is going to work. At the initial time t=0 I have no idea of the future particularly in which time group the new customer will be.
To compare my models I use the time d...