Results 71 to 80 of about 157,142 (279)

Maximum Allowable Contrast Dose and Risk of Acute Kidney Injury After Coronary Procedures

Catheterization and Cardiovascular Interventions, EarlyView.
ABSTRACT Background Recent studies have questioned whether iodinated contrast is causally related to acute kidney injury (AKI). AIM We pursed a contemporary analysis to determine the impact of contrast dose on AKI following coronary procedures in an era of lower contrast doses and less nephrotoxic agents.
Harshita Gaba, Elise Mesenbring, Christine Chow, Jennifer A. Rymer, Celina M. Yong, Stephen W. Waldo, Jacob A. Doll   +6 more
wiley   +1 more source

Copula‐based joint modelling of emergency department visits with time‐varying dependence

Canadian Journal of Statistics, EarlyView.
Abstract Jointly modelling multiple correlated count time series is essential in health services research, where outcomes like emergency visits for mental health and substance use often evolve together. Ignoring these dependencies can obscure meaningful trends and limit the effectiveness of policy evaluation.
Guanjie Lyu, Cindy Feng, Lihui Liu
wiley   +1 more source

Hierarchical Archimedean Copulas for MATLAB and Octave: The HACopula Toolbox

Journal of Statistical Software, 2020
To extend the current implementation of copulas in MATLAB to non-elliptical distributions in arbitrary dimensions enabling for asymmetries in the tails, the toolbox HACopula provides functionality for modeling with hierarchical (or nested) Archimedean ...
Jan Górecki, Marius Hofert, Martin Holena   +2 more
doaj   +1 more source

On Kendall's Tau for Order Statistics

, 2018
Every copula $ C $ for a random vector $ {\bf X}=(X_1,\dots,X_d) $ with identically distributed coordinates determines a unique copula $ C_{:d} $ for its order statistic $ {\bf X}_{:d}=(X_{1:d},\dots,X_{d:d}) $. In the present paper we study the dependence structure of $ C_{:d} $ via Kendall's tau, denoted by $ κ$. As a general result, we show that $ κ[
Fuchs, Sebastian, Schmidt, Klaus D.
openaire   +2 more sources

Vine copula knockoffs for variable selection in gene expression studies

Canadian Journal of Statistics, EarlyView.
Abstract Identifying clinical and genetic markers is essential for stratifying cancer patients by survival outcomes and guiding personalized treatment strategies. However, gene expression studies often involve high‐dimensional predictors with mixed data types and complex dependence, which complicates reliable variable selection.
José Ulises Márquez Urbina, Alejandro Román Vásquez, Graciela González Farías, Gabriel Escarela   +3 more
wiley   +1 more source

Accuracy of the strengths and difficulties questionnaire in identifying common mental health disorders in children and adolescents: a cross-sectional analytical study

Discover Mental Health
Background and aim This cross-sectional analytic study, conducted in the Child and Adolescent Mental Health (CAMH) Clinic of Sultan Qaboos University Hospital (SQUH) for 12 months, aimed to evaluate the precision of the Strengths and Difficulties ...
Maisaa Al-Dhahri, Salim Al-Huseini, Maisa AL-Jamoudi, Sanjay Jaju, Samir Al-Adawi, Hassan Mirza   +5 more
doaj   +1 more source

Spatiotemporal cellular dynamics of the notochord shape intervertebral disc morphogenesis in the mouse embryo through apoptosis and proliferation

Developmental Dynamics, EarlyView.
Abstract Background The notochord is a midline structure essential for vertebrate embryogenesis, contributing to the development of the nervous system, digestive tract, and vertebral column. In particular, notochord signaling is indispensable for proper patterning and coordinated development of alternating vertebrae and intervertebral discs (IVDs ...
Julie Warin, Estelle Balissat, Pauline Colombier, Lily Paillat, Maeva Dutilleul, Anne Camus   +5 more
wiley   +1 more source

Complex Versus Parsimonious Site‐Based Stochastic Ground Motion Models: Which One Is Better?

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Stochastic ground motion models (GMMs) provide a probabilistic representation of seismic input and are increasingly important for uncertainty quantification (UQ) in earthquake engineering. This study focuses on site‐based stochastic GMMs, which learn the statistical features of selected datasets of seismic records and generate statistically ...
Maijia Su, Mayssa Dabaghi, Marco Broccardo   +2 more
wiley   +1 more source

Parameters behind "nonparametric" statistics: Kendall's tau,Somers' D and median differences [PDF]

So-called "nonparametric" statistical methods are often in fact based on population parameters, which can be estimated (with confidence limits) using the corresponding sample statistics.
Roger Newson
core  

Impact of evidence‐based information on horse owners' misconceptions of colic

Equine Veterinary Journal, EarlyView.
Abstract Background Misconceptions can be defined as ‘false, persistent beliefs’ or ‘inaccurate, prior knowledge’ and can influence decision‐making. Objectives To investigate the impact of evidence‐based information on UK horse owners' decision‐making for colic. Study Design Mixed‐methods cross‐sectional study.
K. L. Burrell, G. C. W. England, J. H. Burford, S. L. Freeman   +3 more
wiley   +1 more source