External Validation of the FIPS Score for Post-TIPS Mortality in a National Veterans Affairs Cohort.

External Validation of the FIPS Score for Post-TIPS Mortality in a National Veterans Affairs Cohort.
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DOI:
10.1007/s10620-021-07307-5
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发表时间:
2022-09
影响因子:
3.1
通讯作者:
Mahmud, Nadim
Mahmud, Nadim
中科院分区:
医学3区
文献类型:
--
作者:
Chapin, Sara E.;Goldberg, David S.;Kaplan, David E.;Mahmud, Nadim

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最近证明,相对于现有标准,TIPS 后弗莱堡生存指数 (FIPS) 评分可以改善 TIPS 后死亡率的预测。由于该分数是在很长一段时间内从德国队列中得出的,因此尚不清楚表现是否能很好地转化为其他环境。本研究旨在从外部验证退伍军人事务部 (VA) 大型队列在两个不同的 TIPS 相关护理时代的 FIPS 评分。这是一项回顾性队列研究,对象为 2008 年至 2020 年在 VA 接受 TIPS 植入的肝硬化患者。使用 FIPS、MELD、MELD-Na 或 CTP 评分作为预测因子,构建了 TIPS 后生存的 Cox 回归模型。对每个分数进行区分度(Harrell’s C)和校准(校准曲线斜率和截距的联合测试)进行评估。对2008-2013年和2014-2020年期间进行了分层分析。该队列由 1,274 名患者组成,其中 97.3% 为男性,平均年龄 60.9 岁,平均 MELD-Na 14。FIPS 评分显示出与 MELD、MELD-Na 和 CTP 相比最高的总体区分度(分别为 0.634 vs. 0.585、0.626、0.612)。然而,在现代治疗时代(2014-2020),FIPS 评分的表现与 MELD-Na 相似。此外,FIPS 分数在 TIPS 后 1 个月和 6 个月的时间点表现出较差的校准(联合 p 分别 = 0.04 和 0.004)。 MELD、MELD-Na 和 CTP 在每个时间点均经过良好校准(每个关节 p > 0.05)。 FIPS 评分的表现与现代 TIPS 治疗时代的 MELD-Na 相似,并显示出校准不良的区域。根据当代数据得出的未来模型可能会改善对 TIPS 后死亡率的预测。
The Freiburg index of post-TIPS survival (FIPS) score was recently demonstrated to improve prediction of post-TIPS mortality relative to existing standards. As this score was derived from a German cohort over an extended time period, it is unclear if performance will translate well to other settings. This study aimed to externally validate the FIPS score in a large Veterans Affairs (VA) cohort over two separate eras of TIPS-related care. This was a retrospective cohort study of patients with cirrhosis who underwent TIPS placement in the VA from 2008 to 2020. Cox regression models for post-TIPS survival were constructed using FIPS, MELD, MELD-Na, or CTP scores as predictors. Discrimination (Harrell’s C) and calibration (joint tests of calibration curve slope and intercept) were evaluated for each score. A stratified analysis was performed for time periods between 2008–2013 and 2014–2020. The cohort of 1,274 patients was 97.3% male with mean age 60.9 years and mean MELD-Na 14. The FIPS score demonstrated the highest overall discrimination versus MELD, MELD-Na, and CTP (0.634 vs. 0.585, 0.626, 0.612, respectively). However, in the modern treatment era (2014–2020), the FIPS score performed similarly to MELD-Na. Additionally, the FIPS score demonstrated poor calibration at one-month and six-month post-TIPS timepoints (joint p = 0.04 and 0.004, respectively). MELD, MELD-Na, and CTP were well-calibrated at each timepoint (each joint p > 0.05). The FIPS score performed similarly to MELD-Na in the modern TIPS treatment era and demonstrated regions of poor calibration. Future models derived with contemporary data may improve prediction of post-TIPS mortality.
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