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Correction: Adjusted restricted mean survival times in observational studies
Statistics in Medicine ( IF 2 ) Pub Date : 2020-09-21 , DOI: 10.1002/sim.8742
Sarah C. Conner 1 , Ludovic Trinquart 1
Affiliation  

In Section 3.2 of our paper 'Adjusted restricted mean survival times in observational studies', our notation for the pseudo‐observation model of the restricted mean survival time (RMST) was incorrect.1 We incorrectly indexed the pseudo‐observation on exposure group k, when we actually calculated the pseudo‐observations in the overall sample.

The correct notation for the pseudo‐observation for individual i is μ τ , i = n · μ ^ τ ( n 1 ) · μ ^ τ ( i ) , where μ ^ τ ( i ) is the estimated RMST without individual i. Then, we model E ( μ τ , i | Z i , X i ) = α + β z Z i + β x X i . The model coefficients are estimated by solving the estimating equation using the pseudo‐observations, i ( β β W i ) V i 1 ( μ τ , i β W i ) = 0 .

The simulations and illustrative example in our paper are correct, and subsequent results are not affected by this error.



中文翻译:

校正:观察研究中调整的限制性平均生存时间

在我们的论文“在观察研究中调整的限制平均生存时间”的第3.2节中,我们对限制平均生存时间(RMST)的伪观测模型的表述是不正确的。1当我们实际计算总体样本中的伪观测值时,我们对暴露组k的伪观测值编制了错误的索引。

个体i的伪观测的正确表示法是 μ τ 一世 = ñ · μ ^ τ - ñ - 1个 · μ ^ τ - 一世 ,在哪里 μ ^ τ - 一世 是没有个体i的估计RMST 。然后,我们建模 Ë μ τ 一世 | ž 一世 X 一世 = α + β ž ž 一世 + β X X 一世 。通过使用伪观测值求解估计方程来估计模型系数, 一世 β β w ^ 一世 V 一世 - 1个 μ τ 一世 - β w ^ 一世 = 0

本文中的仿真和说明性示例是正确的,后续结果不受此错误的影响。

更新日期:2020-11-09
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