Big data in gastroenterology research

M Alizadeh, N Sampaio Moura, A Schledwitz… - International Journal of …, 2023 - mdpi.com
Studying individual data types in isolation provides only limited and incomplete answers to
complex biological questions and particularly falls short in revealing sufficient mechanistic …

A comparison of bias‐adjusted generalized estimating equations for sparse binary data in small‐sample longitudinal studies

M Gosho, R Ishii, H Noma, K Maruo - Statistics in Medicine, 2023 - Wiley Online Library
Using a generalized estimating equation (GEE) can lead to a bias in regression coefficients
for a small sample or sparse data. The bias‐corrected GEE (BCGEE) and penalized GEE …

[HTML][HTML] Dealing with complete separation and quasi-complete separation in logistic regression for linguistic data

RG Clark, W Blanchard, FKC Hui, R Tian… - Research Methods in …, 2023 - Elsevier
Logistic regression is a powerful and widely used analytical tool in linguistics for modelling a
binary outcome variable against a set of explanatory variables. One challenge that can arise …

Natural history of incomplete retinal pigment epithelial and outer retinal atrophy in age-related macular degeneration

G Corradetti, F Corvi, MG Nittala, M Nassisi… - Canadian Journal of …, 2021 - Elsevier
Objective To assess the time course and risk factors for conversion of incomplete retinal
pigment epithelium and outer retina atrophy (iRORA) to complete retinal pigment epithelium …

Firth‐Type Penalized Methods of the Modified Poisson and Least‐Squares Regression Analyses for Binary Outcomes

S Uno, H Noma, M Gosho - Biometrical Journal, 2024 - Wiley Online Library
The modified Poisson and least‐squares regression analyses for binary outcomes have
been widely used as effective multivariable analysis methods to provide risk ratio and risk …

On estimation for accelerated failure time models with small or rare event survival data

TF Alam, MS Rahman, W Bari - BMC Medical Research Methodology, 2022 - Springer
Background Separation or monotone likelihood may exist in fitting process of the
accelerated failure time (AFT) model using maximum likelihood approach when sample size …

Covariate‐adjusted generalized pairwise comparisons in small samples

S Jaspers, J Verbeeck, O Thas - Statistics in Medicine, 2024 - Wiley Online Library
Semiparametric probabilistic index models allow for the comparison of two groups of
observations, whilst adjusting for covariates, thereby fitting nicely within the framework of …

A bias-reduced generalized estimating equation approach for proportional odds models with small-sample longitudinal ordinal data

Y Tada, T Sato - BMC Medical Research Methodology, 2024 - Springer
Background Longitudinal ordinal data are commonly analyzed using a marginal
proportional odds model for relating ordinal outcomes to covariates in the biomedical and …

Diagnostic test accuracy in longitudinal study settings: theoretical approaches with use cases from clinical practice

J Böhnke, A Zapf, K Kramer, P Weber, L Bode… - Journal of Clinical …, 2024 - Elsevier
Objectives In this study, we evaluate how to estimate diagnostic test accuracy (DTA)
correctly in the presence of longitudinal patient data (ie, repeated test applications per …

geessbin: an R package for analyzing small-sample binary data using modified generalized estimating equations with bias-adjusted covariance estimators

R Ishii, T Ohigashi, K Maruo, M Gosho - BMC Medical Research …, 2024 - Springer
Background The generalized estimating equation (GEE) method is widely used for
analyzing longitudinal and clustered data. Although the GEE estimate for regression …