Research/Scholarly/Creative Works

• Ritz C., Jensen SM., Gerhard D. and Streibig JC. (2019) Dose-Response Analysis Using R. (1st ed.). Boca Raton, Florida: Chapman and Hall/CRC. 226. (Authored Books)

• Yadok BG., Forget PM., Gerhard D. and Chapman H. (2019) Low fruit-crop years of Carapa oreophila drive increased seed removal and predation by scatterhoarding rodents in a West African forest. Acta Oecologica 99 http://dx.doi.org/10.1016/j.actao.2019.103448. (Journal Articles)

• Tillard G., Cook KJ., Gerhard D., Keast L. and McAuliffe M. (2018) Speech-language pathology student participation in verbal reflective practice groups: perceptions of development, value and group condition differences.. Teaching and Learning in Communication Sciences and Disorders 2(2) 5 http://dx.doi.org/10.30707/TLCSD2.2Tillard. (Journal Articles)

• Yadok BG., Gerhard D., Forget P-M. and Chapman HM. (2018) Size doesn't matter: Larger Carapa seeds are not dispersed farther by African rodent community. African Journal of Ecology 56(4): 1028-1033. http://dx.doi.org/10.1111/aje.12542. (Journal Articles)

• Cook KJ., Tillard G., Wyles C., Gerhard D., Ormond T. and McAuliffe M. (2017) Assessing and developing the written reflective practice skills of speech-language pathology students. International Journal of Speech-Language Pathology : 10. http://dx.doi.org/10.1080/17549507.2017.1374463. (Journal Articles)

• Cook KJ., Tillard GDA., Wyles CL., Gerhard D., Ormond TF. and McAuliffe MJ. (2017) Assessing and developing reflective practice skills in speech-language pathology students. International Journal of Speech-Language Pathology : 10. http://dx.doi.org/10.1080/17549507.2017.1374463. (Journal Articles)

• Gerhard D. and Ritz C. (2017) Marginalization in nonlinear mixed-effects models with an application to dose-response analysis. . (Journal Articles)

• Kuiper K., Fromont R. and Gerhard D. (2017) Polysemy and word frequency: A replication. Journal of Research Design and Statistics in Linguistics and Communicaton Science 4(2): 144-155. http://dx.doi.org/10.1558/jrds.33751. (Journal Articles)

• Liu M., Scheepbouwer E. and Gerhard D. (2017) Statistical Model for Estimating Restoration Time of Sewerage Pipelines after Earthquakes. Journal of Performance of Constructed Facilities 31(5) 04017076 http://dx.doi.org/10.1061/(ASCE)CF.1943-5509.0001064. (Journal Articles)

• Moltchanova E., Gerhard D., Mohamed F., Gaw S. and Glover C. (2017) On correlation analysis of many-to-many observations: an alternative to Pearson's correlation coefficient and its application to an ecotoxicological study. Australian and New Zealand Journal of Statistics 59(4): 371-387. http://dx.doi.org/10.1111/anzs.12211. (Journal Articles)

• Otava M., Sengupta R., Shkedy Z., Lin D., Pramana S., Verbeke T., Haldermans P., Hothorn LA., Gerhard D. and Kuiper RM. (2017) IsoGeneGUI: Multiple Approaches for Dose-Response Analysis of Microarray Data Using R. The R Journal 9(1): 14-26. (Journal Articles)

• Otava M., Shkedy Z., Hothorn LA., Talloen W., Gerhard D. and Kasim A. (2017) Identification of the Minimum Effective Dose for Normally Distributed Data Using a Bayesian Variable Selection Approach. Journal of Biopharmaceutical Statistics : 1073-1088. http://dx.doi.org/10.1080/10543406.2017.1295247. (Journal Articles)

• Schaarschmidt F., Gerhard D. and Vogel C. (2017) Simultaneous confidence intervals for comparisons of several multinomial samples. Computational Statistics and Data Analysis 106: 65-76. http://dx.doi.org/10.1016/j.csda.2016.09.004. (Journal Articles)

• Baty F., Ritz C., Van Gestel A., Brutsche M. and Gerhard D. (2016) Modeling the oxygen uptake kinetics during exercise testing of patients with chronic obstructive pulmonary diseases using nonlinear mixed models. BMC Medical Research Methodology 16(1) 66 http://dx.doi.org/10.1186/s12874-016-0173-8. (Journal Articles)

• Gerhard D. (2016) Simultaneous Small Sample Inference for Linear Combinations of Generalized Linear Model Parameters. Communications in Statistics: Simulation and Computation 45(8): 2678-2690. http://dx.doi.org/10.1080/03610918.2014.895836. (Journal Articles)

• Nicken P., Empl MT., Gerhard D., Hausmann J. and Steinberg P. (2016) Methionine restriction inhibits chemically-induced malignant transformation in the BALB/c 3T3 cell transformation assay. Food and Chemical Toxicology 95: 196-202. http://dx.doi.org/10.1016/j.fct.2016.07.014. (Journal Articles)

• Bohne H., Wanjiku J., Rathke AK., Humpert S. and Gerhard D. (2015) Influence of nutrient loading on reactions upon frost and drought stress of Rosa majalis. European Journal of Horticultural Science 80(4): 155-161. http://dx.doi.org/10.17660/eJHS.2015/80.4.2. (Journal Articles)

• Hansen CT., Ritz C., Gerhard D., Jensen JE. and Streibig JC. (2015) Re-evaluation of groundwater monitoring data for glyphosate and bentazone by taking detection limits into account. Science of The Total Environment 536: 68-71. http://dx.doi.org/10.1016/j.scitotenv.2015.07.047. (Journal Articles)

• Ritz C., Baty F., Streibig JC. and Gerhard D. (2015) Dose-Response Analysis Using R. PLoS ONE 10(12) e0146021 http://dx.doi.org/10.1371/journal.pone.0146021. (Journal Articles)

• Gerhard D., Bremer M. and Ritz C. (2014) Estimating marginal properties of quantitative real-time PCR data using nonlinear mixed models. Biometrics 70(1): 247-254. http://dx.doi.org/10.1111/biom.12124. (Journal Articles)

• Graf N., Dinkel B., Rose H., Hothorn LA., Gerhard D., Johansen P., Kundig TM., Klimek L. and Senti G. (2014) A critical appraisal of analyzing nasal provocation test results in allergen immunotherapy trials. Rhinology 52(2): 137-141. (Journal Articles)

• Kuiper RM., Gerhard D. and Hothorn LA. (2014) Identification of the Minimum Effective Dose for Normally Distributed Endpoints Using a Model Selection Approach. Statistics in Biopharmaceutical Research 6(1): 55-66. http://dx.doi.org/10.1080/19466315.2013.847384. (Journal Articles)

• Krug AK., Kolde R., Gaspar JA., Rempel E., Balmer NV., Meganathan K., Vojnits K., Baquié M., Waldmann T. and Ensenat-Waser R. (2013) Human embryonic stem cell-derived test systems for developmental neurotoxicity: a transcriptomics approach. Archives of toxicology 87(1): 123-143. http://dx.doi.org/10.1007/s00204-012-0967-3. (Journal Articles)

• Ritz C., Gerhard D. and Hothorn LA. (2013) A Unified Framework for Benchmark Dose Estimation Applied to Mixed Models and Model Averaging. Statistics in Biopharmaceutical Research 5(1): 79-90. http://dx.doi.org/10.1080/19466315.2012.757559. (Journal Articles)

• Strohmaier J., Amelang M., Hothorn LA., Witt SH., Nieratschker V., Gerhard D., Meier S., Wuest S., Frank J. and Loerbroks A. (2013) The psychiatric vulnerability gene CACNA1C and its sex-specific relationship with personality traits, resilience factors and depressive symptoms in the general population. Molecular Psychiatry 18(5): 607-613. http://dx.doi.org/10.1038/mp.2012.53. (Journal Articles)

• Hoffmann S., Hothorn LA., Edler L., Kleensang A., Suzuki M., Phrakonkham P. and Gerhard D. (2012) Two new approaches to improve the analysis of BALB/c 3T3 cell transformation assay data. Mutation Research/Genetic Toxicology and Environmental Mutagenesis 744(1): 36-41. http://dx.doi.org/10.1016/j.mrgentox.2011.12.002. (Journal Articles)

• Hothorn LA., Libiger O. and Gerhard D. (2012) Model-specific tests on variance heterogeneity for detection of potentially interacting genetic loci. BMC genetics 13(1): 59-59. http://dx.doi.org/10.1186/1471-2156-13-59. (Journal Articles)

• Gerhard D. and Hothorn LA. (2010) Rank transformation in haseman-elston regression using scores for location-scale alternatives. Human Heredity 69(3): 143-151. http://dx.doi.org/10.1159/000267994. (Journal Articles)

• Hothorn LA. and Gerhard D. (2009) Statistical evaluation of the in vivo micronucleus assay. Archives of Toxicology 83(6): 625-634. http://dx.doi.org/10.1007/s00204-008-0393-8. (Journal Articles)

• Hothorn LA., Gerhard D. and Hofmann M. (2009) Parametric and non-parametric prediction intervals based phase II control charts for repeated bioassay data. Biologicals 37(5): 323-330. http://dx.doi.org/10.1016/j.biologicals.2009.07.001. (Journal Articles)

• Braat S., Gerhard D. and Hothorn LA. (2008) Joint one-sided and two-sided simultaneous confidence intervals. Journal of Biopharmaceutical Statistics 18(2): 293-306. http://dx.doi.org/10.1080/10543400701697174. (Journal Articles)