External validation of a Cox prognostic model: principles and methods.
BACKGROUND: A prognostic model should not enter clinical practice unless it has been demonstrated that it performs a useful role. External validation denotes evaluation of model performance in a sample independent of that used to develop the model. Unlike for logistic regression models, external val...
| Main Authors: | , |
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| Format: | Journal article |
| Language: | English |
| Published: |
BioMed Central
2013
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