External validation is necessary in prediction research: a clinical example.

@article{Bleeker2003ExternalVI,
  title={External validation is necessary in prediction research: a clinical example.},
  author={S E Bleeker and Henri{\"e}tte A. Moll and Ewout Willem Steyerberg and A. Rogier T. Donders and Gerarda Derksen-Lubsen and Diederick E. Grobbee and Karel G. M. Moons},
  journal={Journal of clinical epidemiology},
  year={2003},
  volume={56 9},
  pages={826-32}
}
BACKGROUND AND OBJECTIVES Prediction models tend to perform better on data on which the model was constructed than on new data. This difference in performance is an indication of the optimism in the apparent performance in the derivation set. For internal model validation, bootstrapping methods are recommended to provide bias-corrected estimates of model… CONTINUE READING