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Adaptive designs are increasingly used in clinical trials and online experiments to improve participant outcomes by dynamically updating treatment allocation as data accumulate. In practice, experimenters often consider multiple candidate…

统计方法学 · 统计学 2026-04-08 Wenxin Zhang , Aaron Hudson , Maya Petersen , Mark van der Laan

Multiple adverse health conditions co-occurring in a patient are typically associated with poor prognosis and increased office or hospital visits. Developing methods to identify patterns of co-occurring conditions can assist in diagnosis.…

计算与语言 · 计算机科学 2017-11-30 Moumita Bhattacharya , Claudine Jurkovitz , Hagit Shatkay

Predicting time-to-event outcomes in large databases can be a challenging but important task. One example of this is in predicting the time to a clinical outcome for patients in intensive care units (ICUs), which helps to support critical…

统计计算 · 统计学 2019-08-06 Yingying Xu , Joon Lee , Joel A. Dubin

This article presents a novel method for predicting suicidal ideation from Electronic Health Records (EHR) and Ecological Momentary Assessment (EMA) data using deep sequential models. Both EHR longitudinal data and EMA question forms are…

The primary benefit of identifying a valid surrogate marker is the ability to use it in a future trial to test for a treatment effect with shorter follow-up time or less cost. However, previous work has demonstrated potential heterogeneity…

统计方法学 · 统计学 2022-09-20 Layla Parast , Tianxi Cai , Lu Tian

In situations where it is difficult to enroll patients in randomized controlled trials, external data can improve efficiency and feasibility. In such cases, adaptive trial designs could be used to decrease enrollment in the control arm of…

统计方法学 · 统计学 2020-10-02 Brian D. Segal , W. Katherine Tan

Evaluating treatment effects is critical in clinical trials but sometimes involves lengthy, invasive, or costly follow-up procedures. In these cases, surrogate markers, which provide intermediate measures of the long-term treatment effect,…

统计方法学 · 统计学 2026-03-24 Sarah C. Lotspeich , P. D. Anh. Nguyen , Layla Parast

Surrogate markers are most commonly studied within the context of randomized clinical trials. However, the need for alternative outcomes extends beyond these settings and may be more pronounced in real-world public health and social science…

统计方法学 · 统计学 2025-04-23 Rebecca Knowlton , Layla Parast

Causal inference across multiple data sources offers a promising avenue to enhance the generalizability and replicability of scientific findings. However, data integration methods for time-to-event outcomes, common in biomedical research,…

统计方法学 · 统计学 2025-05-16 Yi Liu , Alexander W. Levis , Ke Zhu , Shu Yang , Peter B. Gilbert , Larry Han

While the volume of electronic health records (EHR) data continues to grow, it remains rare for hospital systems to capture dense physiological data streams, even in the data-rich intensive care unit setting. Instead, typical EHR records…

机器学习 · 计算机科学 2018-12-04 Satya Narayan Shukla , Benjamin M. Marlin

Electronic Health Records present a valuable modality for driving personalized medicine, where treatment is tailored to fit individual-level differences. For this purpose, many data-driven machine learning and statistical models rely on the…

机器学习 · 计算机科学 2024-12-16 Ghadeer O. Ghosheh , Jin Li , Tingting Zhu

Risk modeling with EHR data is challenging due to a lack of direct observations on the disease outcome, and the high dimensionality of the candidate predictors. In this paper, we develop a surrogate assisted semi-supervised-learning (SAS)…

统计理论 · 数学 2021-05-05 Jue Hou , Zijian Guo , Tianxi Cai

Electronic Health Records (EHR) contain rich longitudinal patient information and are widely used in predictive modeling applications. However, effectively leveraging historical data remains challenging due to long trajectories,…

信息检索 · 计算机科学 2026-05-13 Saeed Shurrab , Mariam Al-Omari , Dana El Samad , Farah E. Shamout

Estimation of heterogeneous treatment effects is an essential component of precision medicine. Model and algorithm-based methods have been developed within the causal inference framework to achieve valid estimation and inference. Existing…

统计方法学 · 统计学 2021-05-10 Ruohong Li , Honglang Wang , Wanzhu Tu

Many rare diseases offer limited established treatment options, leading patients to switch therapies when new medications emerge. To analyze the impact of such treatment switches within the low sample size limitations of rare disease…

Distributed representations of medical concepts have been used to support downstream clinical tasks recently. Electronic Health Records (EHR) capture different aspects of patients' hospital encounters and serve as a rich source for…

计算与语言 · 计算机科学 2020-01-07 Shaika Chowdhury , Chenwei Zhang , Philip S. Yu , Yuan Luo

We study the problem of inferring heterogeneous treatment effects from time-to-event data. While both the related problems of (i) estimating treatment effects for binary or continuous outcomes and (ii) predicting survival outcomes have been…

机器学习 · 计算机科学 2022-01-25 Alicia Curth , Changhee Lee , Mihaela van der Schaar

In healthcare, risk assessment of patient outcomes has been based on survival analysis for a long time, i.e. modeling time-to-event associations. However, conventional approaches rely on data from a single time-point, making them suboptimal…

机器学习 · 计算机科学 2026-02-20 Mine Öğretir , Miika Koskinen , Juha Sinisalo , Risto Renkonen , Harri Lähdesmäki

We introduce a statistical procedure that integrates survival data from multiple biomedical studies, to improve the accuracy of predictions of survival or other events, based on individual clinical and genomic profiles, compared to models…

应用统计 · 统计学 2020-07-20 Steffen Ventz , Rahul Mazumder , Lorenzo Trippa

In medical and biological research, longitudinal data and survival data types are commonly seen. Traditional statistical models mostly consider to deal with either of the data types, such as linear mixed models for longitudinal data, and…

统计方法学 · 统计学 2021-07-12 Jizi Shangguan