Results 41 to 50 of about 181,011 (259)

Continuity Correction and Standard Error Calculation for Testing in Proportional Hazards Models

Stats
Standard asymptotic inference for proportional hazards models is conventionally performed by calculating a standard error for the estimate and comparing the estimate divided by the standard error to a standard normal distribution.
Daniel Baumgartner, John E. Kolassa
doaj   +1 more source

Duration time‐series models with proportional hazard [PDF]

Journal of Time Series Analysis, 2007
Abstract. The analysis of liquidity in financial markets is generally performed by means of the dynamics of the observed intertrade durations (possibly weighted by price or volume). Various dynamic models for duration data have been considered in the literature, such as the Autoregressive Conditional Duration (ACD) model.
Patrick Gagliardini, Christian Gourieroux   +1 more
openaire   +2 more sources

Comparison of radiomic feature aggregation methods for patients with multiple tumors

Scientific Reports, 2021
Radiomic feature analysis has been shown to be effective at analyzing diagnostic images to model cancer outcomes. It has not yet been established how to best combine radiomic features in cancer patients with multifocal tumors.
Enoch Chang, Marina Z. Joel, Hannah Y. Chang, Justin Du, Omaditya Khanna, Antonio Omuro, Veronica Chiang, Sanjay Aneja   +7 more
doaj   +1 more source

Survival in influenza virus-related pneumonia by viral subtype: 2016-2020

International Journal of Infectious Diseases, 2021
Background: : Influenza remains a common cause of morbidity and mortality worldwide, and viral subtype-related differences in disease outcomes have been documented.
Efrén Murillo-Zamora, Xóchitl Trujillo, Miguel Huerta, Mónica Ríos-Silva, José Guzmán-Esquivel, Verónica Benites-Godínez, Oliver Mendoza-Cano   +6 more
doaj   +1 more source

Central Nervous System Neuroblastoma, FOXR2‐Activated: A Pooled Analysis of Published Clinical Outcomes

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Central nervous system (CNS) neuroblastoma, FOXR2‐activated, is a recently recognized entity in the WHO CNS5 classification, defined by activation of the FOXR2 transcription factor and unique histopathological features. This review synthesizes available literature and pooled clinical data, providing insight into demographics ...
Sudarshawn Damodharan, Mohamed S. Abdelbaki   +1 more
wiley   +1 more source

Causal Interactions in the Proportional Hazards Model [PDF]

Epidemiology, 2011
The paper relates estimation and testing for additive interaction in proportional hazards models to causal interactions within the counterfactual framework. A definition of a causal interaction for time-to-event outcomes is given that generalizes existing definitions for dichotomous outcomes. Conditions are given concerning the relative excess risk due
openaire   +2 more sources

Sustained Therapeutic Efficacy of Intravenous Plasminogen Concentrate in Pediatric Patients With Type 1 Plasminogen Deficiency: An Analysis of Dosing Parameters and Clinical Outcomes

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Type 1 plasminogen deficiency (PLGD‐1) is an ultra‐rare autosomal recessive disorder caused by variants in the PLG gene and affects approximately 1.6 individuals per million. The condition is characterized by decreased plasminogen levels and impaired function, resulting in fibrin‐rich lesions on mucous membranes throughout the body.
Charles Nakar, Karen Thibaudeau, Mary Mathias, Heather McDaniel, Madlen Reschke, Klaus Tenbrock, Joseph M. Parker, Amy Shapiro   +7 more
wiley   +1 more source

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

PLoS 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, Ambuj Kumar, Rahul Mhaskar, Sehwan Kim, Ronald Schonwetter, Benjamin Djulbegovic   +5 more
doaj   +1 more source

Regression Models for Lifetime Data: An Overview

Stats, 2022
Two methods dominate the regression analysis of time-to-event data: the accelerated failure time model and the proportional hazards model. Broadly speaking, these predominate in reliability modelling and biomedical applications, respectively.
Chrys Caroni
doaj   +1 more source

Estimation in a Cox Proportional Hazards Cure Model [PDF]

Biometrics, 2000
Summary.Some failure time data come from a population that consists of some subjects who are susceptible to and others who are nonsusceptible to the event of interest. The data typically have heavy censoring at the end of the follow‐up period, and a standard survival analysis would not always be appropriate.
Sy, Judy P., Taylor, Jeremy M. G.
openaire   +4 more sources