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Caveats: Time-varying Covariates
Time-varying covariates are far more easily implemented
in the hazard based models
•Risk
set approach makes this easy
However, scientifically we run the risk of overfitting
our data using variables we are less interested in
•A
priest delivering last rites is highly predictive of
death and that may obscure that it was a gunshot wound that led to the
death