Results 81 to 90 of about 426,709 (217)

Identification of a Specific Gene Module for Predicting Prognosis in Glioblastoma Patients

Frontiers in Oncology, 2019
Introduction: Glioblastoma (GBM) is the most common and malignant variant of intrinsic glial brain tumors. The poor prognosis of GBM has not significantly improved despite the development of innovative diagnostic methods and new therapies.
Xiangjun Tang, Xiangjun Tang, Xiangjun Tang, Pengfei Xu, Bin Wang, Jie Luo, Rui Fu, Kuanming Huang, Longjun Dai, Junti Lu, Gang Cao, Hao Peng, Li Zhang, Zhaohui Zhang, Qianxue Chen   +14 more
doaj   +1 more source

An Analytic Approach to the Cox Proportional Hazards Model for Estimating the Lifespan of Cutting Tools

Journal of Manufacturing and Materials Processing, 2020
The machining industry raises an ever-growing concern for the significant cost of cutting tools in the production process of mechanical parts, with a focus on the replacement policy of these inserts.
Lucas Equeter, François Ducobu, Edouard Rivière-Lorphèvre, Roger Serra, Pierre Dehombreux   +4 more
doaj   +1 more source

Determinants of premature mortality in a city population: An eight-year observational study concerning subjects aged 18–64

International Journal of Occupational Medicine and Environmental Health, 2013
Background: Premature deaths constitute 31.1% of all deaths in Łódź. Analysis of the causes of premature deaths may be helpful in the evaluation of health risk factors. Moreover, findings of this study may enhance prophylactic measures.
Irena Maniecka-Bryła, Elżbieta Dziankowska-Zaborszczyk, Marek Bryła, Wojciech Drygas   +3 more
doaj   +1 more source

The Duration of Trade Revisited: Continuous-Time vs. Discrete-Time Hazards [PDF]

The recent literature on the duration of trade has predominantly analyzed the determinants of trade flow durations using Cox proportional hazards models.
Hess, Wolfgang, Persson, Maria
core  

Model Selection Strategy for Cox Proportional Hazards Model

Dhaka University Journal of Science, 2019
Often in survival regression modelling, not all predictors are relevant to the outcome variable. Discarding such irrelevant variables is very crucial in model selection. In this research, under Cox Proportional Hazards (PH) model we study different model selection criteria including Stepwise selection, Least Absolute Shrinkage and Selection Operator ...
Md Jamil Hasan Karami, Fabiha Binte Farooq   +1 more
openaire   +2 more sources

A proportional hazards model of bank failure: an examination of its usefulness as an early warning tool [PDF]

An explanation of how a Cox proportional hazards model can be used to identify both failed and healthy banks with a high degree of accuracy using a relatively small set of publicly available data.Bank ...
Gary Whalen
core  

Analysis of time-to-event for observational studies: Guidance to the use of intensity models

, 2020
This paper provides guidance for researchers with some mathematical background on the conduct of time-to-event analysis in observational studies based on intensity (hazard) models.
Abrahamowicz, Michal, Andersen, Per Kragh, Cook, Richard J, Joly, Pierre, Martinussen, Torben, Perme, Maja Pohar, Taylor, Jeremy MG, Therneau, Terry M, van Houwelingen, Hans C   +8 more
core   +1 more source

Standard errors for the cox proportional hazards cure model

Mathematical and Computer Modelling, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Sy, J. P., Taylor, J. M. G.
openaire   +1 more source

THE EFFECT OF CMV INFECTION ON PROGRESSION OF HUMAN-IMMUNODEFICIENCY-VIRUS DISEASE IN A COHORT OF HEMOPHILIC MEN FOLLOWED FOR UP TO 13 YEARS FROM SEROCONVERSION [PDF]

, 1995
The effect of prior infection with cytomegalovirus (CMV) on progression of HIV disease in a cohort of 111 men with haemophilia was studied after 13 years followup.
EMERY, V, GRIFFITHS, PD, JANOSSY, G, LEE, CA, PHILLIPS, AN, SABIN, CA   +5 more
core   +1 more source

Are non-constant rates and non-proportional treatment effects accounted for in the design and analysis of randomised controlled trials? A review of current practice

BMC Medical Research Methodology, 2019
Background Most clinical trials with time-to-event primary outcomes are designed assuming constant event rates and proportional hazards over time. Non-constant event rates and non-proportional hazards are seen increasingly frequently in trials.
Kim Jachno, Stephane Heritier, Rory Wolfe   +2 more
doaj   +1 more source