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Cardiovascular disease (CVD) is the global leading cause of death. A strong risk factor for CVD events is the amount of coronary artery calcium (CAC). To meet demands of the increasing interest in quantification of CAC, i.e. coronary…

计算机视觉与模式识别 · 计算机科学 2021-09-09 Bob D. de Vos , Jelmer M. Wolterink , Tim Leiner , Pim A. de Jong , Nikolas Lessmann , Ivana Isgum

Estimating the marginal and joint densities of the long-term average intakes of different dietary components is an important problem in nutritional epidemiology. Since these variables cannot be directly measured, data are usually collected…

统计方法学 · 统计学 2022-05-18 Abhra Sarkar

Cardiovascular diseases (CVDs) are any serious illness of the heart, which require accurate diagnosis to prevent fatal consequences. Hyperparameter tuning plays a critical role in optimizing machine learning model performance by selecting…

机器学习 · 计算机科学 2026-05-19 Abhay Kumar Pathak , Mrityunjay Chaubey , Manjari Gupta

Existing metrics in competing risks survival analysis such as concordance and accuracy do not evaluate a model's ability to jointly predict the event type and the event time. To address these limitations, we propose a new metric, which we…

统计方法学 · 统计学 2019-08-20 Kartik Ahuja , Mihaela van der Schaar

Background --The objective of this study was to examine the association of routine blood test results with coronary heart disease (CHD) risk, to incorporate them into coronary prediction models and to compare the discrimination properties…

医学物理 · 物理学 2018-09-26 Ning Meng , Peng Zhang , Junfeng Li , Jun He , Jin Zhu

The COVID-19 pandemic has had a considerable impact on day-to-day life. Tackling the disease by providing the necessary resources to the affected is of paramount importance. However, estimation of the required resources is not a trivial…

图像与视频处理 · 电气工程与系统科学 2022-05-11 Sai Vidyaranya Nuthalapati , Marcela Vizcaychipi , Pallav Shah , Piotr Chudzik , Chee Hau Leow , Paria Yousefi , Ahmed Selim , Keiran Tait , Ben Irving

We propose a novel approach to the estimation of multiple Graphical Models to analyse temporal patterns of association among a set of metabolites over different groups of patients. Our motivating application is the Southall And Brent…

统计方法学 · 统计学 2022-07-28 Marco Molinari , Andrea Cremaschi , Maria De Iorio , Nishi Chaturvedi , Alun Hughes , Therese Tillin

Two-sample summary-data Mendelian randomization (MR) has become a popular research design to estimate the causal effect of risk exposures. With the sample size of GWAS continuing to increase, it is now possible to utilize genetic…

应用统计 · 统计学 2018-11-20 Qingyuan Zhao , Yang Chen , Jingshu Wang , Dylan S. Small

Civil registration vital statistics (CRVS) data are used to produce national estimates of maternal mortality, but are often subject to substantial reporting errors due to misclassification of maternal deaths. The accuracy of CRVS systems…

应用统计 · 统计学 2019-09-19 Emily Peterson , Doris Chou , Ann-Beth Moller , Alison Gemmill , Lale Say , Leontine Alkema

In many applications, data often arise from multiple groups that may share similar characteristics. A joint estimation method that models several groups simultaneously can be more efficient than estimating parameters in each group…

统计方法学 · 统计学 2020-08-17 Kyoungjae Lee , Xuan Cao

Comparative meta-analyses of groups of subjects by integrating multiple observational studies rely on estimated propensity scores (PSs) to mitigate covariate imbalances. However, PS estimation grapples with the theoretical and practical…

统计方法学 · 统计学 2024-05-09 Subharup Guha , Yi Li

Animal-vehicle collisions (AVCs) are common around the world and result in considerable loss of animal and human life, as well as significant property damage and regular insurance claims. Understanding their occurrence in relation to…

应用统计 · 统计学 2021-06-15 Krishna Murthy Gurumurthy , Zili Li , Kara M. Kockelman , Prateek Bansal

The association between visit-to-visit systolic blood pressure variability and cardiovascular events has recently received a lot of attention in the cardiovascular literature. But blood pressure variability is usually estimated on a…

应用统计 · 统计学 2019-01-25 Jessica K. Barrett , Raphael Huille , Richard Parker , Yuichiro Yano , Michael Griswold

In this study, we present a hybrid CNN-RNN approach to investigate long-term survival of subjects in a lung cancer screening study. Subjects who died of cardiovascular and respiratory causes were identified whereby the CNN model was used to…

机器学习 · 计算机科学 2023-03-21 Yaozhi Lu , Shahab Aslani , An Zhao , Ahmed Shahin , David Barber , Mark Emberton , Daniel C. Alexander , Joseph Jacob

The objective is to assess the extent of variation of data quality and completeness of electronic health records and impact on the robustness of risk predictions of incident cardiovascular disease (CVD) using a risk prediction tool that is…

应用统计 · 统计学 2019-11-21 Yan Li , Matthew Sperrin , Glen P. Martin , Darren M Ashcroft , Tjeerd Pieter van Staa

To extend cognitive diagnostic models (CDMs) to longitudinal settings, stepwise approaches that integrate a CDM model with a latent transition model and covariates are widely used due to their flexibility. Previous research has shown that…

统计方法学 · 统计学 2026-04-20 Yawen Ma , Anastasia Ushakova , Kate Cain , Gabriel Wallin

Cardiovascular diseases (CVDs) are the leading cause of mortality worldwide, accounting for over 30% of global deaths according to the World Health Organization (WHO). Importantly, one-third of these deaths are preventable with timely and…

信号处理 · 电气工程与系统科学 2025-08-19 Ridma Jayasundara , Ishan Fernando , Adeepa Fernando , Roshan Ragel , Vajira Thambawita , Isuru Nawinne

The widespread use of generalized linear models in case-control genetic studies has helped identify many disease-associated risk factors typically defined as DNA variants, or single nucleotide polymorphisms (SNPs). Up to now, most…

应用统计 · 统计学 2019-03-05 Chao Zheng , Davide Ferrari , Michael Zhang , Paul Baird

Healthcare datasets often contain groups of highly correlated features, such as features from the same biological system. When feature selection is applied to these datasets to identify the most important features, the biases inherent in…

机器学习 · 计算机科学 2022-07-07 Annette Spooner , Gelareh Mohammadi , Perminder S. Sachdev , Henry Brodaty , Arcot Sowmya

Cardiovascular diseases (CVDs) are the number one cause of death worldwide. While there is growing evidence that the atrial fibrillation (AF) has strong associations with various CVDs, this heart arrhythmia is usually diagnosed using…

系统与控制 · 电气工程与系统科学 2022-07-13 Wei-Ying Yi , Peng-Fei Liu , Sheung-Lai Lo , Ya-Fen Chan , Yu Zhou , Yee Leung , Kam-Sang Woo , Alex Pui-Wai Lee , Jia-Min Chen , Kwong-Sak Leung