Results 21 to 30 of about 331,748 (244)

The Southern European Atlantic Diet and all-cause mortality in older adults

open access: yesBMC Medicine, 2021
Background The Southern European Atlantic Diet (SEAD) is the traditional diet of Northern Portugal and North-Western Spain. Higher adherence to the SEAD has been associated with lower levels of some cardiovascular risk factors and reduced risk for ...
Adrián Carballo-Casla   +7 more
doaj   +1 more source

Does Atrial Fibrillation Increase the Risk of New Onset Myocardial Infarction? [PDF]

open access: yesZhongguo quanke yixue, 2022
Background Atrial fibrillation is the most obvious arrhythmia in medical practice. Atrial fibrillation has been listed as one of the eight fastest-growing causes of death since 1990.
Yujing HAO, Jie YU, Quanle HAN, Ruiying MAO, Jing YU, Lihua SONG, Shouling WU
doaj   +1 more source

Generating Survival Times to Simulate Cox Proportional Hazards Models [PDF]

open access: yes, 2003
This paper discusses techniques to generate survival times for simulation studies regarding Cox proportional hazards models. In linear regression models, the response variable is directly connected with the considered covariates, the regression ...
Augustin, Thomas   +2 more
core   +2 more sources

Violations of proportional hazard assumption in Cox regression model of transcriptomic data in TCGA pan-cancer cohorts

open access: yesComputational and Structural Biotechnology Journal, 2022
Background: Cox proportional hazard regression (CPH) model relies on the proportional hazard (PH) assumption: the hazard of variables is independent of time. CPH has been widely used to identify prognostic markers of the transcriptome.
Zihang Zeng   +7 more
doaj   +1 more source

Three-year Survival of Women with Breast Cancer in Basrah, Iraq

open access: yesOman Medical Journal, 2020
Objectives: We sought to determine the overall observed three-year survival rate of women with breast cancer in Basrah, Iraq, and investigate the associated factors. Methods: Data was collected retrospectively from the Oncology Center registry in Basrah,
Jasim N. Al-Asadi, Sundus M. Al-Mayah
doaj   +1 more source

Survival analysis of irish amyotrophic lateral sclerosis patients diagnosed from 1995-2010. [PDF]

open access: yesPLoS ONE, 2013
IntroductionThe Irish ALS register is a valuable resource for examining survival factors in Irish ALS patients. Cox regression has become the default tool for survival analysis, but recently new classes of flexible parametric survival analysis tools ...
James Rooney   +7 more
doaj   +1 more source

Density Regression Based on Proportional Hazards Family [PDF]

open access: yes, 2015
This paper develops a class of density regression models based on proportional hazards family, namely, Gamma transformation proportional hazard (Gt-PH) model . Exact inference for the regression parameters and hazard ratio is derived.
Bickel   +13 more
core   +2 more sources

Moving beyond the Cox proportional hazards model in survival data analysis: a cervical cancer study

open access: yesBMJ Open, 2020
Objectives This study explored the prognostic factors and developed a prediction model for Chinese-American (CA) cervical cancer (CC) patients. We compared two alternative models (the restricted mean survival time (RMST) model and the proportional ...
Lixian Li   +3 more
doaj   +1 more source

Dynamic Random Effects Models for Times between Repeated Events [PDF]

open access: yes, 2001
We consider recurrent event data when the duration or gap times between successive event occurrences are of intrinsic interest. Subject heterogeneity not attributed to observed covariates is usually handled by random effects which result in an ...
Fong, DYT, Lam, KF, Lawless, JF, Lee, YW
core   +1 more source

Impact of delayed treatment in women diagnosed with breast cancer: A population‐based study

open access: yesCancer Medicine, 2020
The impact of timely treatment on breast cancer‐specific survival may differ by tumor stage. We aim to study the impact of delayed first treatment on overall survival across different tumor stages.
Peh Joo Ho   +5 more
doaj   +1 more source

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