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Randomized Controlled Trials (RCTs) represent the gold standard for causal inference yet remain a scarce resource. While large-scale observational data is often available, it is utilized only for retrospective fusion, and remains discarded…

机器学习 · 统计学 2026-03-05 Erdun Gao , Liang Zhang , Jake Fawkes , Aoqi Zuo , Wenqin Liu , Haoxuan Li , Mingming Gong , Dino Sejdinovic

Cardiovascular diseases (CVD) are the leading cause of death globally. Non-invasive, cost-effective imaging techniques play a crucial role in early detection and prevention of CVD. Optical coherence tomography (OCT) has gained recognition…

Randomized clinical trials (RCTs) are ideal for estimating causal effects, because the distributions of background covariates are similar in expectation across treatment groups. When estimating causal effects using observational data,…

统计方法学 · 统计学 2019-02-27 Anthony D. Scotina , Roee Gutman

Observational cohort studies with oversampled exposed subjects are typically implemented to understand the causal effect of a rare exposure. Because the distribution of exposed subjects in the sample differs from the source population,…

统计方法学 · 统计学 2019-02-14 Sherri Rose

Matching and weighting methods for observational studies involve the choice of an estimand, the causal effect with reference to a specific target population. Commonly used estimands include the average treatment effect in the treated (ATT),…

统计方法学 · 统计学 2023-07-12 Noah Greifer , Elizabeth A. Stuart

We propose and study a fully efficient method to estimate associations of an exposure with disease incidence when both, incident cases and prevalent cases, i.e. individuals who were diagnosed with the disease at some prior time point and…

统计方法学 · 统计学 2018-03-20 Marlena Maziarz , Yukun Liu , Jing Qin , Ruth Pfeiffer

The Dunnett procedure compares several treatment or dose groups with a control group, while controlling the familywise error rate. When deviations from the normal distribution and heterogeneous variances occur, the nominal $\alpha$ level…

应用统计 · 统计学 2019-05-07 Ludwig A. Hothorn , Felix M. Kluxen

In observational studies, the recorded treatment assignment is not purely random, but it is influenced by external factors such as patient characteristics, reimbursement policies, and existing guidelines. Therefore, the treatment effect can…

统计方法学 · 统计学 2024-09-02 Sara Poletto , Enrico Longato , Erica Tavazzi , Martina Vettoretti

An accurate estimation of the dose-response relationship is important to determine the optimal dose. For this purpose, a dose finding trial in which subjects are randomized to a few fixed dose levels is the most commonly used design. Often,…

统计方法学 · 统计学 2025-08-07 Jixian Wang , Zhiwei Zhang , Ram Tiwari

Oral Glucose Tolerance Test (OGTT) is one of many way to produce data in the study of the diabetes dynamic. In a recent paper [1.]:\textit{ Estimating insulin sensitivity and $ \beta $-cell function from the oral glucose tolerance test:…

概率论 · 数学 2024-12-17 Paul Bekima

Estimands using the treatment policy strategy for addressing intercurrent events are common in Phase III clinical trials. One estimation approach for this strategy is retrieved dropout whereby observed data following an intercurrent event…

One central goal of design of observational studies is to embed non-experimental data into an approximate randomized controlled trial using statistical matching. Despite empirical researchers' best intention and effort to create…

统计方法学 · 统计学 2022-06-22 Kan Chen , Siyu Heng , Qi Long , Bo Zhang

Platform trials allow treatment arms to enter and exit over time while maintaining a shared control arm, yielding concurrent and non-concurrent controls (NCC). Pooling NCC is often motivated as a strategy to improve statistical efficiency,…

统计方法学 · 统计学 2026-03-12 Antonio D'Alessandro , Samrachana Adhikari , Michele Santacatterina

Hypoglycemia is a severe condition of decreased blood glucose, specifically below 70 mg/dL (3.9 mmol/L). This condition can often be asymptomatic and challenging to predict in individuals with type 1 diabetes (T1D). Research on hypoglycemic…

定量方法 · 定量生物学 2026-03-24 Vaibhav Gupta , Florian Grensing , Beyza Cinar , Louisa van den Boom , Maria Maleshkova

Diagnostic accuracy studies assess sensitivity and specificity of a new index test in relation to an established comparator or the reference standard. The development and selection of the index test is usually assumed to be conducted prior…

统计方法学 · 统计学 2022-08-30 Max Westphal , Antonia Zapf

Observational studies often benefit from an abundance of observational units. This can lead to studies that -- while challenged by issues of internal validity -- have inferences derived from sample sizes substantially larger than randomized…

统计方法学 · 统计学 2020-08-24 Rachael C. Aikens , Dylan Greaves , Michael Baiocchi

Recently, diabetic retinopathy (DR) screening utilizing ultra-wide optical coherence tomography angiography (UW-OCTA) has been used in clinical practices to detect signs of early DR. However, developing a deep learning-based DR analysis…

图像与视频处理 · 电气工程与系统科学 2022-10-19 Gitaek Kwon , Eunjin Kim , Sunho Kim , Seongwon Bak , Minsung Kim , Jaeyoung Kim

Early identification of patients at risk of cardiovascular diseases (CVD) is crucial for effective preventive care, reducing healthcare burden, and improving patients' quality of life. This study demonstrates the potential of retinal…

图像与视频处理 · 电气工程与系统科学 2024-10-21 Cynthia Maldonado-Garcia , Arezoo Zakeri , Alejandro F Frangi , Nishant Ravikumar

Sequential multiple assignment randomized trials (SMARTs) are used to construct data-driven optimal intervention strategies for subjects based on their intervention and covariate histories in different branches of health and behavioral…

统计方法学 · 统计学 2022-04-28 Palash Ghosh , Xiaoxi Yan , Bibhas Chakraborty

The ability to efficiently match the frequency of the brain's response to repetitive visual stimuli in real time is the basis for reliable SSVEP-based Brain-Computer-Interfacing (BCI). The detection of different stimuli is posed as a…

信号处理 · 电气工程与系统科学 2018-12-11 Pouria Saidi , Azadeh Vosoughi , George Atia