Results 1 to 10 of about 355,313 (330)

Verticox+: vertically distributed Cox proportional hazards model with improved privacy guarantees [PDF]

open access: yesComplex & Intelligent Systems
Federated learning allows us to run machine learning algorithms on decentralized data when data sharing is not permitted due to privacy concerns. Various models have been adapted to use in a federated setting.
Florian van Daalen   +4 more
doaj   +2 more sources

Cox proportional hazards model with Bayesian neural network for survival prediction [PDF]

open access: yesScientific Reports
Survival analysis plays a crucial aspect in medical research and other domains where understanding the time-to-events is paramount. In this study, we present a novel approach for estimating survival outcomes that combines Bayesian neural networks with ...
Fojan Faghiri, Akram Kohansal
doaj   +2 more sources

Regularization Paths for Cox's Proportional Hazards Model via Coordinate Descent [PDF]

open access: yesJournal of Statistical Software, 2011
We introduce a pathwise algorithm for the Cox proportional hazards model, regularized by convex combinations of l1 and l2 penalties (elastic net). Our algorithm fits via cyclical coordinate descent, and employs warm starts to find a solution along a ...
Noah Simon   +3 more
doaj   +1 more source

A novel 14-gene signature for overall survival in lung adenocarcinoma based on the Bayesian hierarchical Cox proportional hazards model [PDF]

open access: yesScientific Reports, 2022
There have been few investigations of cancer prognosis models based on Bayesian hierarchical models. In this study, we used a novel Bayesian method to screen mRNAs and estimate the effects of mRNAs on the prognosis of patients with lung adenocarcinoma ...
Na Sun   +5 more
doaj   +2 more sources

Estimation of treatment effects in weighted log-rank tests

open access: yesContemporary Clinical Trials Communications, 2017
Non-proportional hazards have been observed in clinical trials. The log-rank test loses power and the standard Cox model generally produces biased estimates under such conditions.
Ray S. Lin, Larry F. León
doaj   +1 more source

Efficient Estimation and Inference in the Proportional Odds Model for Survival Data

open access: yesMathematics, 2022
In modeling time-to-event data with long-term survivors, the proportional hazards model is widely used for its easy and direct interpretation as well as the flexibility to accommodate the past information and allow time-varying predictors.
Xifen Huang   +4 more
doaj   +1 more source

A flexible alternative to the Cox proportional hazards model for assessing the prognostic accuracy of hospice patient survival. [PDF]

open access: yesPLoS ONE, 2012
Prognostic models are often used to estimate the length of patient survival. The Cox proportional hazards model has traditionally been applied to assess the accuracy of prognostic models.
Branko Miladinovic   +5 more
doaj   +1 more source

A Resampling Method to Improve the Prognostic Model of End-Stage Kidney Disease: A Better Strategy for Imbalanced Data

open access: yesFrontiers in Medicine, 2022
BackgroundPrognostic models can help to identify patients at risk for end-stage kidney disease (ESKD) at an earlier stage to provide preventive medical interventions. Previous studies mostly applied the Cox proportional hazards model.
Xi Shi   +6 more
doaj   +1 more source

A semiparametric Bayesian proportional hazards model for interval censored data with frailty effects

open access: yesBMC Medical Research Methodology, 2009
Background Multivariate analysis of interval censored event data based on classical likelihood methods is notoriously cumbersome. Likelihood inference for models which additionally include random effects are not available at all.
Hölzel Dieter   +3 more
doaj   +1 more source

Prognostic Factors in Patients With Colorectal Cancer at Hospital Universiti Sains Malaysia

open access: yesAsian Journal of Surgery, 2010
To determine the 5-year survival rate and prognostic factors for survival in patients with colorectal cancer treated at the Surgical Unit, Hospital Universiti Sains Malaysia (HUSM), Kelantan, Malaysia.
Anis Kausar Ghazali   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy