Results 31 to 40 of about 1,497,781 (343)

On Cox proportional hazards model performance under different sampling schemes.

open access: yesPLoS ONE, 2023
Cox's proportional hazards model (PH) is an acceptable model for survival data analysis. This work investigates PH models' performance under different efficient sampling schemes for analyzing time to event data (survival data). We will compare a modified
Hani Samawi, Lili Yu, JingJing Yin
doaj   +2 more sources

Machine Learning Predictive Models for Survival in Patients with Brain Stroke [PDF]

open access: yesHealth Promotion Perspectives
Background: This study aims to harness the predictive power of machine learning (ML) algorithms for accurately predicting mortality and survival outcomes in brain stroke (BS) patients.
Solmaz Norouzi   +6 more
doaj   +1 more source

Model assisted Cox regression

open access: yesJournal of Multivariate Analysis, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Shoubhik Mondal, Sundarraman Subramanian
openaire   +2 more sources

Model Uncertainty Quantification in Cox Regression

open access: yesBiometrics, 2023
Abstract We consider covariate selection and the ensuing model uncertainty aspects in the context of Cox regression. The perspective we take is probabilistic, and we handle it within a Bayesian framework. One of the critical elements in variable/model selection is choosing a suitable prior for model parameters.
Gonzalo García-Donato   +2 more
openaire   +5 more sources

Parsimonious modelling of winter season rainfall incorporating reanalysis climatological data

open access: yesHydrology Research, 2018
Several Markov modulated Poisson process (MMPP) models are developed to describe winter season rainfall with parsimonious parameter use. We propose a methodology for determining the best form of seasonal model for fine-scale rainfall within a MMPP ...
Andrew P. Garthwaite, N. I. Ramesh
doaj   +1 more source

Post-ischaemic treatment with the cyclooxygenase-2 inhibitor nimesulide reduces blood-brain barrier disruption and leukocyte infiltration following transient focal cerebral ischaemia in rats [PDF]

open access: yes, 2007
Several studies suggest that cyclooxygenase (COX)-2 plays a pivotal role in the progression of ischemic brain damage. In the present study, we investigated the effects of selective inhibition of COX-2 with nimesulide (12 mg/kg) and selective inhibition ...
Candelario-Jalil, Eduardo   +4 more
core   +2 more sources

Validation of a Cox prognostic model for tooth autotransplantation

open access: yesClinical and Experimental Dental Research, 2023
Objectives This study aimed to validate our Cox proportional hazards prognostic model for autotransplantation of teeth with complete root formation using prognostic index (PI) and determine whether the prognosis can be predicted. Patients and Methods The
Toshiya Yoshino   +6 more
doaj   +1 more source

Prevalence and Factors Associated with under-5 Mortality in Nigeria: Evidence from 2018 Nigeria Demographic and Health Survey

open access: yesDr. Sulaiman Al Habib Medical Journal, 2021
Under-five mortality is a substantial indicator of children's health, well-being, and consequently, socioeconomic development of a country. The primary focus of this study was to estimate the prevalence and identify the factors associated with under-5 ...
Ashis Talukder   +4 more
doaj   +1 more source

Ku80 cooperates with CBP to promote COX-2 expression and tumor growth. [PDF]

open access: yes, 2015
Cyclooxygenase-2 (COX-2) plays an important role in lung cancer development and progression. Using streptavidin-agarose pulldown and proteomics assay, we identified and validated Ku80, a dimer of Ku participating in the repair of broken DNA double ...
Chen, Yiming   +23 more
core   +3 more sources

Cox regression survival analysis with compositional covariates: application to modelling mortality risk from 24-h physical activity patterns [PDF]

open access: yes, 2020
Survival analysis is commonly conducted in medical and public health research to assess the association of an exposure or intervention with a hard end outcome such as mortality. The Cox (proportional hazards) regression model is probably the most popular
Chastin, S.F.M.   +4 more
core   +1 more source

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