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The Health State Function theory is applied to find a quantitative estimate of the Human Development Stages by defining and calculating the specific age groups and subgroups. Early and late adolescence stages, first, second and third stages…

Populations and Evolution · Quantitative Biology 2013-01-08 Christos H Skiadas , Charilaos Skiadas

We conducted a prospective analysis of incident dementia and its association with 65 sociodemographic, early-life, economic, health and behavioral, social, and genetic risk factors in a sample of 7,908 adults over the age of 50 from the…

Applications · Statistics 2021-01-27 Jordan Weiss , Eli Puterman , Aric A. Prather , Erin B. Ware , David H. Rehkopf

Unobserved individual heterogeneity is a common challenge in population cancer survival studies. This heterogeneity is usually associated with the combination of model misspecification and the failure to record truly relevant variables. We…

Methodology · Statistics 2023-01-06 F. J. Rubio , H. Putter , A. Belot

In cognitive network neuroscience, the connectivity and community structure of the brain network is related to cognition. Much of this research has focused on two measures of connectivity - modularity and flexibility - which frequently have…

Neurons and Cognition · Quantitative Biology 2017-11-28 Aurora I. Ramos-Nuñez , Simon Fischer-Baum , Randi Martin , Qiuhai Yue , Fengdan Ye , Michael W. Deem

Physical activity (PA) is an important risk factor for many health outcomes. Wearable-devices such as accelerometers are increasingly used in biomedical studies to understand the associations between PA and health outcomes. Statistical…

Methodology · Statistics 2021-12-08 Sneha Jadhav , Carmen D. Tekwe , Yuanyuan Luan

Accurate estimation of gait characteristics, including step length, step velocity, and travel distance, is critical for assessing mobility in toddlers, children and teens with Duchenne muscular dystrophy (DMD) and typically developing (TD)…

Signal Processing · Electrical Eng. & Systems 2025-06-02 Erik K. Henricson , Albara Ah Ramli

We propose a functional linear model to predict a response using multiple functional and longitudinal predictors and to estimate the effect lags of predictors. The coefficient functions are written as the expansion of a basis system (e.g.…

Methodology · Statistics 2019-07-24 Haiyan Liu , Georgios Aivaliotis , Jeanine Houwing-Duistermaat

Tropical cyclone (TC) forecasting is critical for disaster warning and emergency response. Deep learning methods address computational challenges but often neglect physical relationships between TC attributes, resulting in predictions…

Machine Learning · Computer Science 2026-03-03 Lei Liu , Xiaoning Yu , Kang Chen , Jiahui Huang , Tengyuan Liu , Hongwei Zhao , Bin Li

In recurrent survival analysis where the event of interest can occur multiple times for each subject, frailty models play a crucial role by capturing unobserved heterogeneity at the subject level within a population. Frailty models…

Methodology · Statistics 2024-10-30 Borna Bateni , Peyman Bateni , Bishwadeep Bhattacharyya , Devin Reeh

The aim of this study was to investigate the age dependence of the fitness and body mass index (BMI) in Korean adults and to find an effective exercise to restore the degradation of fitness due to aging. The age dependence of the fitness…

Quantitative Methods · Quantitative Biology 2020-02-12 Nam Lyong Kang , Su Chak Ryu

Machine health management is one of the main research contents of PHM technology, which aims to monitor the health states of machines online and evaluate degradation stages through real-time sensor data. In recent years, classic sparsity…

Signal Processing · Electrical Eng. & Systems 2022-05-03 Yudong Cao

We present a new statistical modelling approach where the response is a function of high frequency count data. Our application is about investigating the relationship between the health outcome fat mass and physical activity (PA) measured…

Applications · Statistics 2016-01-20 Nicole H. Augustin , Calum Mattocks , Julian J. Faraway , Sonja Greven , Andy R. Ness

As the world ages, elderly care becomes a big concern of the society. To address the elderly's issues on dementia and fall risk, we have investigated smart cognitive and fall risk assessment with machine learning methodology based on the…

Quantitative Methods · Quantitative Biology 2021-02-23 Jian Ma

Rooted in genetics, human complex diseases are largely influenced by environmental factors. Existing literature has shown the power of integrative gene-environment interaction analysis by considering the joint effect of environmental…

Methodology · Statistics 2022-08-26 Jingyi Zhang , Xu Liu , Honglang Wang , Yuehua Cui

Functional data are increasingly prevalent in biomedical research. While functional data analysis has been established for decades, causal inference with functional treatments remains largely unexplored. Existing methods typically focus on…

Methodology · Statistics 2026-02-11 Ziren Jiang , Erjia Cui , Jared D. Huling

The growing global elderly population is expected to increase the prevalence of frailty, posing significant challenges to healthcare systems. Frailty, a syndrome associated with ageing, is characterised by progressive health decline,…

Machine Learning · Computer Science 2023-10-02 Eugenio Lomurno , Simone Toffoli , Davide Di Febbo , Matteo Matteucci , Francesca Lunardini , Simona Ferrante

Passive and non-obtrusive health monitoring using wearables can potentially bring new insights into the user's health status throughout the day and may support clinical diagnosis and treatment. However, identifying segments of free-living…

Signal Processing · Electrical Eng. & Systems 2019-01-31 Yordan P. Raykov , Luc J. W. Evers , Reham Badawy , Marjan J. Faber , Bastiaan R. Bloem , Kasper Claes , Max A. Little

Background: Aortic stenosis (AS) is the most common acquired valvar disease and is associated with increased risk for frailty. Frailty as a geriatric syndrome is associated with muscle weakness and a compromised autonomic nervous system…

Quantitative Methods · Quantitative Biology 2024-04-25 Patricio Arrué , Kaveh Laksari , Nancy Sweitzer , Mindy Fain , Nima Toosizadeh

This research develops a socioeconomic health index for nations through a model-based approach which incorporates spatial dependence and examines the impact of a policy through a causal modeling framework. As the gross domestic product…

Applications · Statistics 2019-11-11 F. Swen Kuh , Grace S. Chiu , Anton H. Westveld

This paper critically examines the conceptual and methodological limitations underlying the current understanding and application of VO2max in exercise science and physical activity prescription. Despite the establishment of WHO guidelines…

Other Quantitative Biology · Quantitative Biology 2025-11-06 J Borresen , H Burger