Results 21 to 30 of about 328,188 (291)

The Prediction Value of (Neutrophil+Monocyte) /Lymphocyte Ratio on In-hospital Mortality of Heart Failure Patients [PDF]

open access: yesZhongguo quanke yixue, 2023
Background Heart failure (HF) is known to be one of the major problems in the cardiovascular field needed to be urgently addressed due to its high incidence, high mortality and poor prognosis. Searching for the optimal risk assessment method is currently
MA Yanyan, REN Fuxian, WANG Yu, GAO Dengfeng
doaj   +1 more source

Proportional hazards models with discrete frailty [PDF]

open access: yesLifetime Data Analysis, 2010
We extend proportional hazards frailty models for lifetime data to allow a negative binomial, Poisson, Geometric or other discrete distribution of the frailty variable. This might represent, for example, the unknown number of flaws in an item under test.
Caroni, Chrys   +2 more
openaire   +4 more sources

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

Locally R-optimal designs for a class of nonlinear multiple regression models

open access: yesStatistical Theory and Related Fields, 2023
This paper concerns with optimal designs for a wide class of nonlinear models with information driven by the linear predictor. The aim of this study is to generate an R-optimal design which minimizes the product of the main diagonal entries of the ...
Lei He, Rong-Xian Yue
doaj   +1 more source

Predictors of PASI90 response in patients with psoriasis treated with ınterleukin ınhibitors: observational cohort study [PDF]

open access: yesAnais Brasileiros de Dermatologia
Background: Psoriasis is a chronic multisystem disorder, and the inhibition of different cytokine pathways has been associated with different treatment responses.
Burhan Engin   +3 more
doaj   +1 more source

Survival analysis of postoperative recurrence of meningioma: 176 cases report

open access: yesChinese Journal of Contemporary Neurology and Neurosurgery, 2022
Objective To investigate the influencing factors of postoperative meningioma recurrence. Methods A total of 176 patients with meningioma treated in Beijing Tiantan Hospital, Capital Medical University from May 2010 to January 2011 were included.
HUANG Guan⁃you   +5 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

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

Retinopathy prediction in type 2 diabetes: Time-varying Cox proportional hazards and machine learning models

open access: yesInformatics in Medicine Unlocked, 2023
Background: Diabetic retinopathy (DR) is one of the most common complications in type 2 diabetes (T2D) with an estimated prevalence of 22%. Predictive modelling has largely been dependent on Cox proportional hazards (CPH) with assumptions of linearity ...
Panu Looareesuwan   +10 more
doaj   +1 more source

Partially linear censored quantile regression [PDF]

open access: yes, 2009
Censored regression quantile (CRQ) methods provide a powerful and flexible approach to the analysis of censored survival data when standard linear models are felt to be appropriate.
B Honore   +17 more
core   +1 more source

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