Search

Results: 78771
Covariate association eliminating weights
Sean Yiu, Li Su
Jun 05, 2018
Weighting methods offer an approach to estimating causal treatment effects in observational studies. However, if weights are estimated by maximum likelihood, misspecification of the treatment assignment model can lead to...
Published by:
A joint modelling approach for multistate processes subject to resolution and under intermittent observations.
Sean Yiu, Brian Tom
Mar 14, 2018
Multistate processes provide a convenient framework when interest lies in characterising the transition intensities between a set of defined states. If, however, there is an unobserved event of interest (not known if and when...
Published by:
Using Machine Learning to Make Computationally Inexpensive Projections of 21st Century Stratospheric Column Ozone Changes in the Tropics
Stratospheric ozone projections in the tropics, modeled using the UKESM1 Earth system model, are explored under different Shared Socioeconomic Pathways (SSPs). Consistent with other studies, it is found that tropical...
Published by:
Exploring the existence of a stayer population with mover-stayer counting process models
Many psoriatic arthritis patients do not progress to permanent joint damage in any of the 28 hand joints, even under prolonged follow-up. This has led several researchers to fit models that estimate the proportion of stayers...
Published by:
Joint calibrated estimation of inverse probability of treatment and censoring weights for marginal structural models.
Sean Yiu, Li Su
Nov 04, 2020
Marginal structural models (MSMs) with inverse probability weighted estimators (IPWEs) are widely used to estimate causal effects of treatment sequences on longitudinal outcomes in the presence of time-varying confounding and...
Published by:
Joint calibrated estimation of inverse probability of treatment and censoring weights for marginal structural models.
Sean Yiu, Li Su
Mar 31, 2022
Marginal structural models (MSMs) with inverse probability weighted estimators (IPWEs) are widely used to estimate causal effects of treatment sequences on longitudinal outcomes in the presence of time-varying confounding and...
Published by:
Trivariate mover-stayer counting process models for investigating joint damage in psoriatic arthritis.
In psoriatic arthritis, many patients do not develop permanent joint damage even after a prolonged follow-up. This has led several authors to consider the possibility of a subpopulation of stayers (those who do not have the...
Published by:
Sensitivity analysis for calibrated inverse probability-of-censoring weighted estimators under non-ignorable dropout.
Li Su, Shaun R Seaman, Sean Yiu
Jul 02, 2022
Inverse probability of censoring weighting is a popular approach to handling dropout in longitudinal studies. However, inverse probability-of-censoring weighted estimators (IPCWEs) can be inefficient and unstable if the weights...
Published by:
Achieving robustness to aleatoric uncertainty with heteroscedastic Bayesian optimisation
Abstract: Bayesian optimisation is a sample-efficient search methodology that holds great promise for accelerating drug and materials discovery programs. A frequently-overlooked modelling consideration in Bayesian optimisation...
Published by:
Predictors of treatment response in a lupus nephritis population
OBJECTIVES: To identify predictors of overall lupus and lupus nephritis (LN) responses in patients with LN. METHODS: Data from the Aspreva Lupus Management Study (ALMS) trial cohort was used to identify baseline predictors of...
Published by:
A Model of Cloud Forensic Application With Assurance of Cloud Log
The key concepts of digital forensic investigation in cloud computing are examination and investigation. Cybercriminals target cloud-based web applications due to presence of vulnerabilities. Forensic investigation is a complex...
Depression amongst interns working in a tertiary care teaching Hospital in Maharashtra
Background: Internship is a crucial stage of medical school regarding student stress which can affect thepatient care negatively. Retrieving knowledge about presence of depression is therefore important in itself and iffound...
Published by: IJHS Medical Association
Depression amongst interns working in a tertiary care teaching Hospital in Maharashtra
Background: Internship is a crucial stage of medical school regarding student stress which can affect the patient care negatively. Retrieving knowledge about presence of depression is therefore important in itself and if found...
Published by: IJHS Medical Association
Knowledge and Attitude among High School Students towards HIV / AIDS in Rural areas of Belagavi–A Cross Sectional Study
Introduction Since its emergence in 1981, the HIV/AIDS pandemic, which poses a serious challenge to mankind, without doubt, has become one of the most serious infectious diseases. Many adolescents around the world are sexually...
Published by: IJHS Medical Association
Sentiment Analysis on Movie Reviews Dataset Using Support Vector Machines and Ensemble Learning
The internet makes it easier for people to connect to each other and has become a platform to express ideas and share information with the world. The growth of the internet has indirectly led to the development of social...

|<

<

1

2

3

4

5

>

>|