Results 11 to 20 of about 277 (152)

Asymptotic normality of the relative error regression function estimator for censored and time series data

open access: yesDependence Modeling, 2021
Consider a survival time study, where a sequence of possibly censored failure times is observed with d-dimensional covariate The main goal of this article is to establish the asymptotic normality of the kernel estimator of the relative error regression ...
Bouhadjera Feriel, Saïd Elias Ould
doaj   +1 more source

Decomposition of the total effect for two mediators: A natural mediated interaction effect framework

open access: yesJournal of Causal Inference, 2022
Mediation analysis has been used in many disciplines to explain the mechanism or process that underlies an observed relationship between an exposure variable and an outcome variable via the inclusion of mediators.
Gao Xin, Li Li, Luo Li
doaj   +1 more source

Evolutionary trend of SARS-CoV-2 inferred by the homopolymeric nucleotide repeats

open access: yesComputational and Mathematical Biophysics, 2022
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the causative agent of the current global COVID-19 pandemic, in which millions of lives have been lost.
Yin Changchuan
doaj   +1 more source

Attributable fraction and related measures: Conceptual relations in the counterfactual framework

open access: yesJournal of Causal Inference, 2023
The attributable fraction (population) has attracted much attention from a theoretical perspective and has been used extensively to assess the impact of potential health interventions. However, despite its extensive use, there is much confusion about its
Suzuki Etsuji, Yamamoto Eiji
doaj   +1 more source

Evaluating early pandemic response through length-of-stay analysis of case logs and epidemiological modeling: A case study of Singapore in early 2020

open access: yesComputational and Mathematical Biophysics, 2023
It is now known that early government interventions in pandemic management helps in slowing down the pandemic in the initial phase, during which a conservative basic reproduction number can be maintained.
Sreevalsan-Nair Jaya   +4 more
doaj   +1 more source

Minimally capturing heterogeneous complier effect of endogenous treatment for any outcome variable

open access: yesJournal of Causal Inference, 2023
When a binary treatment DD is possibly endogenous, a binary instrument δ\delta is often used to identify the “effect on compliers.” If covariates XX affect both DD and an outcome YY, XX should be controlled to identify the “XX-conditional complier ...
Lee Goeun   +2 more
doaj   +1 more source

Optimal balancing of time-dependent confounders for marginal structural models

open access: yesJournal of Causal Inference, 2021
Marginal structural models (MSMs) can be used to estimate the causal effect of a potentially time-varying treatment in the presence of time-dependent confounding via weighted regression.
Kallus Nathan, Santacatterina Michele
doaj   +1 more source

Optimal weighting for estimating generalized average treatment effects

open access: yesJournal of Causal Inference, 2022
In causal inference, a variety of causal effect estimands have been studied, including the sample, uncensored, target, conditional, optimal subpopulation, and optimal weighted average treatment effects.
Kallus Nathan, Santacatterina Michele
doaj   +1 more source

Towards Prediction of HCV Therapy Efficiency

open access: yesComputational and Mathematical Methods in Medicine, Volume 11, Issue 2, Page 185-199, 2010., 2010
We investigate a correlation between genetic diversity of hepatitis C virus population and the level of viral RNA accumulation in patient blood. Genetic diversity is defined as the mean Hamming distance between all pairs of virus RNA sequences representing the population. We have found that a low Hamming distance (i.e. low genetic diversity) correlates
Szymon Wasik   +6 more
wiley   +1 more source

Inferences for Joint Modelling of Repeated Ordinal Scores and Time to Event Data

open access: yesComputational and Mathematical Methods in Medicine, Volume 11, Issue 3, Page 281-295, 2010., 2010
In clinical trials and other follow‐up studies, it is natural that a response variable is repeatedly measured during follow‐up and the occurrence of some key event is also monitored. There has been a considerable study on the joint modelling these measures together with information on covariates.
Arindom Chakraborty, Kalyan Das
wiley   +1 more source

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