Evaluation of clinical prediction models (part 3): calculating the sample size required for an external validation study
Evaluation of clinical prediction models (part 3): calculating the sample size required for an external validation study
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临床预测模型的评估（第 3 部分）：计算外部验证研究所需的样本量
DOI：
10.1136/bmj-2023-074821
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发表时间：
2024
期刊：
影响因子：
--
通讯作者：
Riley R
中科院分区：
文献类型：
--
作者：
Riley R
外部验证研究评估了预测模型在新数据中的性能，但这些研究中的许多研究都太小，无法提供可靠的答案。在他们关于模型评估的系列文章的第三篇中，Riley和他的同事描述了如何计算外部验证研究所需的样本量，并建议通过为模型定制计算和手头的设置来避免经验法则。
An external validation study evaluates the performance of a prediction model in new data, but many of these studies are too small to provide reliable answers. In the third article of their series on model evaluation, Riley and colleagues describe how to calculate the sample size required for external validation studies, and propose to avoid rules of thumb by tailoring calculations to the model and setting at hand.