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pro vyhledávání: '"Roever, Christian"'
Autor:
Röver, Christian, Friede, Tim
Publikováno v:
Biometrical Journal, 66(6):e202300387, 2024
Meta-analyses are commonly performed based on random-effects models, while in certain cases one might also argue in favour of a common-effect model. One such case may be given by the example of two "study twins" that are performed according to a comm
Externí odkaz:
http://arxiv.org/abs/2312.09884
Publikováno v:
Research Synthesis Methods, 15(3):413-429, 2024
The trace plot is seldom used in meta-analysis, yet it is a very informative plot. In this article we define and illustrate what the trace plot is, and discuss why it is important. The Bayesian version of the plot combines the posterior density of ta
Externí odkaz:
http://arxiv.org/abs/2306.17043
Autor:
Welz, Thilo, Knop, Eric, Konietschke, Frank, Hardenberg, Jan-Hendrik B., Pauly, Markus, Röver, Christian
Background: The COVID-19 pandemic has had a profound impact on health, everyday life and economics around the world. An important complication that can arise in connection with a COVID-19 infection is acute kidney injury. A recent observational cohor
Externí odkaz:
http://arxiv.org/abs/2212.01067
Autor:
Röver, Christian, Friede, Tim
Publikováno v:
Computer Methods and Programs in Biomedicine, 229:107303, 2023
BACKGROUND: Random-effects meta-analysis within a hierarchical normal modeling framework is commonly implemented in a wide range of evidence synthesis applications. More general problems may even be tackled when considering meta-regression approaches
Externí odkaz:
http://arxiv.org/abs/2209.06004
Autor:
Röver, Christian, Friede, Tim
Publikováno v:
Research Synthesis Methods, 13(5):645-648, 2022
The variance-stabilizing Freeman-Tukey double arcsine transform was originally proposed for inference on single proportions. Subsequently, its use has been suggested in the context of meta-analysis of proportions. While some erratic behaviour has bee
Externí odkaz:
http://arxiv.org/abs/2203.04773
Publikováno v:
Statistics in Medicine, 42(14):2439-2454, 2023
In Bayesian meta-analysis, the specification of prior probabilities for the between-study heterogeneity is commonly required, and is of particular benefit in situations where only few studies are included. Among the considerations in the set-up of su
Externí odkaz:
http://arxiv.org/abs/2202.12538
Meta-analysis methods are used to combine evidence from multiple studies. Meta-regression as well as model-based meta-analysis are extensions of standard pairwise meta-analysis in which information about study-level covariates and (arm-level) dosing
Externí odkaz:
http://arxiv.org/abs/2202.00502
Publikováno v:
Statistics in Medicine, 41(20):3915-3940, 2022
Phase I early-phase clinical studies aim at investigating the safety and the underlying dose-toxicity relationship of a drug or combination. While little may still be known about the compound's properties, it is crucial to consider quantitative infor
Externí odkaz:
http://arxiv.org/abs/2110.06132
Autor:
Röver, Christian, Bender, Ralf, Dias, Sofia, Schmid, Christopher H., Schmidli, Heinz, Sturtz, Sibylle, Weber, Sebastian, Friede, Tim
Publikováno v:
Research Synthesis Methods, 12(4):448-474, 2021
The normal-normal hierarchical model (NNHM) constitutes a simple and widely used framework for meta-analysis. In the common case of only few studies contributing to the meta-analysis, standard approaches to inference tend to perform poorly, and Bayes
Externí odkaz:
http://arxiv.org/abs/2007.08352
Autor:
Röver, Christian, Friede, Tim
Publikováno v:
Biometrical Journal, 65(5):1131-1143, 2021
Shrinkage estimation in a meta-analysis framework may be used to facilitate dynamical borrowing of information. This framework might be used to analyze a new study in the light of previous data, which might differ in their design (e.g., a randomized
Externí odkaz:
http://arxiv.org/abs/2004.02525