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External validation of clinical prediction models: simulation-based sample size calculations were more reliable than rules-of-thumb
INTRODUCTION: Sample size “rules-of-thumb” for external validation of clinical prediction models suggest at least 100 events and 100 non-events. Such blanket guidance is imprecise, and not specific to the model or validation setting. We investigate factors affecting precision of model performance es...
| Autores principales: | , , , , , , , |
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
| Publicado: |
Elsevier
2021
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| Materias: | |
| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8352630/ https://www.ncbi.nlm.nih.gov/pubmed/33596458 http://dx.doi.org/10.1016/j.jclinepi.2021.02.011 |