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arXiv 2102.02297stat.MEstat.CO
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pcoxtime:时间依赖性协变量的惩罚Cox比例风险模型

pcoxtime: Penalized Cox Proportional Hazard Model for Time-dependent Covariates

Steve Cygu, Jonathan Dushoff, Benjamin M. Bolker

摘要:

惩罚Cox比例风险模型是一种流行的分析方法,生存数据与大量的协变量。当协变量随随访时间变化时(即,协变量是时间依赖性的)。完全惩罚Cox模型的标准R包目前不能包含时间依赖的协变量。为了解决这一差距,我们实现了梯度下降算法的一个变体(近端梯度下降)来拟合惩罚Cox模型。我们将我们的实现应用于真实和模拟数据集。

英文摘要:

The penalized Cox proportional hazard model is a popular analytical approach for survival data with a large number of covariates. Such problems are especially challenging when covariates vary over follow-up time (i.e., the covariates are time-dependent). The standard R packages for fully penalized Cox models cannot currently incorporate time-dependent covariates. To address this gap, we implement a variant of gradient descent algorithm (proximal gradient descent) for fitting penalized Cox models. We apply our implementation to real and simulated data sets.

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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