Results 31 to 40 of about 1,478,952 (298)

Using Wavelet Shrinkage in the Cox Proportional Hazards Regression model (simulation study) [PDF]

open access: yesالمجلة العراقية للعلوم الاحصائية, 2022
The proposed method in this paper dealt with the problem of data contamination in the Cox Proportional Hazards Regression model (CPHRM) by using Wavelet Shrinkage to de-noise data, calculating the discrete wavelet transformation coefficients for wavelets
taha ali, Jwana Rostam Qadir
doaj   +1 more source

Limit Theorems for a Cox-Ingersoll-Ross Process with Hawkes Jumps [PDF]

open access: yes, 2014
In this paper, we propose a stochastic process, which is a Cox-Ingersoll-Ross process with Hawkes jumps. It can be seen as a generalization of the classical Cox-Ingersoll-Ross process and the classical Hawkes process with exponential exciting function ...
Zhu, Lingjiong
core   +1 more source

Optimal Estimation for the Functional Cox Model

open access: yes, 2016
Functional covariates are common in many medical, biodemographic, and neuroimaging studies. The aim of this paper is to study functional Cox models with right-censored data in the presence of both functional and scalar covariates. We study the asymptotic
Qu, Simeng, Wang, Jane-Ling, Wang, Xiao
core   +1 more source

Quasi-linear Cox proportional hazards model with cross- L1 penalty

open access: yesBMC Medical Research Methodology, 2020
Background To accurately predict the response to treatment, we need a stable and effective risk score that can be calculated from patient characteristics.
Katsuhiro Omae, Shinto Eguchi
doaj   +1 more source

Change detection in the Cox-Ingersoll-Ross model [PDF]

open access: yes, 2015
We propose a change detection method for the famous Cox--Ingersoll--Ross model. This model is widely used in financial mathematics and therefore detecting a change in its parameters is of crucial importance.
Pap, Gyula, Szabó, Tamás T.
core   +2 more sources

Identification of Factors Affecting Metastatic Gastric Cancer Patients’ Survival Using the Random Survival Forest and Comparison with Cox Regression Model

open access: yesمجله اپیدمیولوژی ایران, 2020
Background and Objectives: In survival analysis, using the Cox model to determine the effective factors requires the assumptions whose failure of leads to biased results.
M Safari   +4 more
doaj  

Phase transitions for the Boolean model of continuum percolation for Cox point processes [PDF]

open access: yes, 2020
We consider the Boolean model with random radii based on Cox point processes. Under a condition of stabilization for the random environment, we establish existence and non-existence of subcritical regimes for the size of the cluster at the origin in ...
Cali, Elie   +2 more
core   +3 more sources

Clinical Course and Impact of Breaks in Therapy for Children With Relapsed/Refractory Solid Tumors

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Pediatric relapsed or refractory (R/R) solid tumors carry a dismal prognosis, and postrelapse patient experiences are not well described. We present postrelapse outcomes, including number of R/R events and subsequent therapy regimens.
Matthew T. McEvoy   +5 more
wiley   +1 more source

Estimating Disease-Free Life Expectancy Based on Clinical Data from the French Hospital Discharge Database

open access: yesRisks
The development of health indicators to measure healthy life expectancy (HLE) is an active field of research aimed at summarizing the health of a population.
Oleksandr Sorochynskyi   +3 more
doaj   +1 more source

Cox model and decision trees: an application to breast cancer data

open access: yesRevista Panamericana de Salud Pública, 2022
Objective. To evaluate, using semiparametric methodologies of survival analysis, the relationship between covariates and time to death of patients with breast cancer, as well as the determination discriminatory power in the conditional inference tree of ...
Lucas Cardoso Pereira   +7 more
doaj   +1 more source

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