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arXiv 1306.6479stat.AP
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基于联合建模和标记的生存分析中时变协变量的动态预测

Dynamic Predictions with Time-Dependent Covariates in Survival Analysis using Joint Modeling and Landmarking

Dimitris Rizopoulos, Magdalena Murawska, Eleni-Rosalina Andrinopoulou, Geert Molenberghs, Johanna J. M. Takkenberg, Emmanuel Lesaffre

摘要:

临床实践中的一个关键问题是准确预测患者预后。为此,如今,医生可以使用各种测试和生物标志物来帮助他们优化医疗护理。这些测试通常定期进行,以密切关注疾病的进展。在这种情况下,最佳地利用记录的信息并提供医学相关的汇总指标(如生存概率)是医学上的兴趣所在,这将有助于决策。在这项工作中,我们提出并比较了两种统计技术,提供动态更新的生存概率估计,即里程碑分析和联合模型的纵向和时间到事件的数据。特别注意的是连接纵向和事件时间过程的功能形式,并在动态预测的背景下的歧视和校准措施。

英文摘要:

A key question in clinical practice is accurate prediction of patient prognosis. To this end, nowadays, physicians have at their disposal a variety of tests and biomarkers to aid them in optimizing medical care. These tests are often performed on a regular basis in order to closely follow the progression of the disease. In this setting it is of medical interest to optimally utilize the recorded information and provide medically-relevant summary measures, such as survival probabilities, that will aid in decision making. In this work we present and compare two statistical techniques that provide dynamically-updated estimates of survival probabilities, namely landmark analysis and joint models for longitudinal and time-to-event data. Special attention is given to the functional form linking the longitudinal and event time processes, and to measures of discrimination and calibration in the context of dynamic prediction.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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