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Table 1 Definitions of key terms

From: Assessment of reproducibility of cancer survival risk predictions across medical centers

Term Definition
Predictability (Predictive performance) Ability of a model to predict risk scores of patients that can match their survival risks (not survival times).
Generalizability (Reproducibility) Ability of a model to predict risk scores of patients generated from different studies (different locations or different times).
Consistency Agreement between two centers to predict the risk scores of a targeted center.
Transferability. Agreement between one center and the targeted center to predict risk scores of targeted center.
Internal validation An assessment of predictive performance of a model in which the available data are divided into a training set and a test set, the model is developed in the training set and applied to the test set.