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@ARTICLE{Kappenberg:167284,
author = {F. Kappenberg and M. Grinberg and X. Jiang and A.
Kopp-Schneider$^*$ and J. G. Hengstler and J. Rahnenführer},
title = {{C}omparison {O}f {O}bservation-{B}ased {A}nd
{M}odel-{B}ased {I}dentification {O}f {A}lert
{C}oncentrations {F}rom {C}oncentration-{E}xpression
{D}ata.},
journal = {Bioinformatics},
volume = {37},
number = {14},
issn = {1460-2059},
address = {Oxford},
publisher = {Oxford Univ. Press},
reportid = {DKFZ-2021-00239},
pages = {1990-1996},
year = {2021},
note = {2021 Jan 30;37(14):1990-1996},
abstract = {An important goal of concentration-response studies in
toxicology is to determine an 'alert' concentration where a
critical level of the response variable is exceeded. In a
classical observation-based approach, only measured
concentrations are considered as potential alert
concentrations. Alternatively, a parametric curve is fitted
to the data that describes the relationship between
concentration and response. For a prespecified effect level,
both an absolute estimate of the alert concentration and an
estimate of the lowest concentration where the effect level
is exceeded significantly are of interest.In a simulation
study for gene expression data, we compared the
observation-based and the model-based approach for both
absolute and significant exceedance of the prespecified
effect level. Results show that, compared to the
observation-based approach, the model-based approach
overestimates the true alert concentration less often and
more frequently leads to a valid estimate, especially for
genes with large variance.The code used for the simulation
studies is available via the GitHub repository:
https://github.com/FKappenberg/Paper-IdentificationAlertConcentrations.Supplementary
data are available at Bioinformatics online.},
cin = {C060},
ddc = {570},
cid = {I:(DE-He78)C060-20160331},
pnm = {313 - Krebsrisikofaktoren und Prävention (POF4-313)},
pid = {G:(DE-HGF)POF4-313},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:33515236},
doi = {10.1093/bioinformatics/btab043},
url = {https://inrepo02.dkfz.de/record/167284},
}