Wellek, Stefan Prof. Dr. rer. nat.Universität HeidelbergHeidelberg
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Co-Autoren (extern)
- Anghelescu, Ion-George (1)
- Jennen-Steinmetz, Christine (1)
- Rujescu, Dan (1)
- Nöthen, Markus M. (1)
- Cichon, Sven (1)
- Schumacher, Johannes (1881-1954) (1)
- Hauser, Joanna (1)
- Blettner, Maria (1)
- Maier, Wolfgang (1)
- Illig, Thomas (1)
- Mildenberger, Philipp (1)
- König, Jochem (1)
- Donner-Banzhoff, Norbert (1)
- Härter, M. (1)
- Martus, P. (1)
- Wiegel, Thomas (1)
- Bondy, Brigitta (1)
- Depner, Martin (1)
- Tullius, Monja (1)
- Propping, Peter (1)
- Ohlraun, Stephanie (1)
- Hampel, Barbara (1)
- Gottberg, A. (1)
- Schmidberger, H. (1)
- Stöckle, M. (1)
- Nettekoven, G. (1)
- Kristiansen, G. (1)
- Bussar-Maatz, R. (1)
- Albers, P. (1)
- Mirić Tešanić, Danka (1)
- Pashaj, Sonila (1)
- Thode, Ch (1)
- Tercanli, S. (1)
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Publikationen in heiBIB
- Merz, Eberhard: Normal fetal growth profile at 10-41 weeks of gestation : an update based on 10225 normal singleton pregnancies and measurement of the fetal parameters using 3D ultrasound / authors: Eberhard Merz, Sonila Pashaj, Stefan Wellek, 01.01.2023. - 9 S.
In: Ultraschall in der Medizin, ISSN 1438-8782. 44(2023), 2, Seite 179-187
DOI: 10.1055/a-1968-0018
- Merz, Eberhard: The Fetal Medicine Foundation (FMF) Germany after 20 years : quality assurance of ultrasound examinations during first trimester screening : editorial / E. Merz, Ch. Thode, B.J. Hackelöer, B. Eiben, R. Faber, S. Tercanli, E. Huda, S. Wellek, 2022. - 5 S.
In: Ultraschall in der Medizin, ISSN 1438-8782. 43(2022), 02, Seite 115-119
DOI: 10.1055/a-1745-6879
- Wellek, Stefan: Reference ranges : why tolerance intervals should not be used / Stefan Wellek, and Christine Jennen-Steinmetz, 2022 Jul 15. - 2 S.
In: Statistical methods in medical research, ISSN 1477-0334. 31(2022), 11 vom: Nov., Seite 2255-2256
DOI: 10.1177/09622802221114538
- Wellek, Stefan: Planning and analysis of trials using a stepped wedge design / Stefan Wellek, Norbert Donner-Banzhoff, Jochem König, Philipp Mildenberger, Maria Blettner, 2019. - 6 S.
In: Deutsches Ärzteblatt international, ISSN 1866-0452. 116(2019), 26, Seite 453-458
DOI: 10.3238/arztebl.2019.0453
- Wellek, Stefan: A U-statistics based approach to sample size planning of two-arm trials with discrete outcome criterion aiming to establish either superiority or noninferiority / Stefan Wellek, 28 February 2017. - 14 S.
In: Statistics in medicine, ISSN 1097-0258. 36(2017), 5, Seite 799-812
DOI: 10.1002/sim.7183
- Wellek, Stefan: Author response to the contributors to the discussion on “a critical evaluation of the current ‘p-value controversy’” / Stefan Wellek, 2017. - 4 S.
In: Biometrical journal, ISSN 1521-4036. 59(2017), 5, Seite 897-900
DOI: 10.1002/bimj.201700076
- Wellek, Stefan: A critical evaluation of the current “p-value controversy” / Stefan Wellek. - 19 S.
In: Biometrical journal, ISSN 1521-4036. 59(2017), 5, S. 854-872
DOI: 10.1002/bimj.201700001
- Wellek, Stefan: Sample size planning of two-arm superiority and noninferiority survival studies with discrete follow-up / Stefan Wellek. - 14 S.
In: Statistics in medicine, ISSN 1097-0258. 36(2017), 20, S. 3123-3136
DOI: 10.1002/sim.7360
- Hoffelder, Thomas: Equivalence testing with particle size distribution data : methods and applications in the development of inhalative drugs / Thomas Hoffelder, Stefan Wellek. - 13 S.
In: Statistics in biopharmaceutical research, ISSN 1946-6315. 9(2017), 1, S. 12-24
DOI: 10.1080/19466315.2016.1173581
- Wellek, Stefan: Testing for noninferiority of binomial distributions referring to a modified equivalence region with piecewise linear boundary / S. Wellek, 2016. - 18 S.
In: The journal of statistical computation and simulation, ISSN 1563-5163. 86(2016), 9, Seite 1736-1753
DOI: 10.1080/00949655.2015.1081906
- Wellek, Stefan: Nearly exact sample size calculation for powerful non-randomized tests for differences between binomial proportions / Stefan Wellek. - 16 S.
In: Statistica Neerlandica, ISSN 1467-9574. 69(2015), 4, S. 358-373
DOI: 10.1111/stan.12063
- Reinhard, Iris: A comparison of region-of-interest measures for extracting whole brain data using survival analysis in alcoholism as an example / I. Reinhard, T. Leménager, M. Fauth-Bühler, D. Hermann, S. Hoffmann, A. Heinz, F. Kiefer, M.N. Smolk… , 15 March 2015. - 7 S.
In: Journal of neuroscience methods, ISSN 1872-678X. 242(2015), Seite 58-64
DOI: 10.1016/j.jneumeth.2015.01.001
- Wellek, Stefan: Determination of reference limits : statistical concepts and tools for sample size calculation / Wellek, Stefan .... - 10 S.
In: Clinical chemistry and laboratory medicine, ISSN 1437-4331. 52(2014), 12, S. 1685-1694
DOI: 10.1515/cclm-2014-0226
- Wiegel, Thomas: PREFERE - die deutsche Prostatakrebsstudie : Fragen und Behauptungen rund um den Studienbeginn im Januar 2013 / T. Wiegel, P. Albers, R. Bussar-Maatz, A. Gottberg, M. Härter, M. Kieser, G. Kristiansen, G. Netteko… , 13. April 2013. - 4 S.
In: Der Urologe, ISSN 1433-0563. 52(2013), 4, Seite 576-579
DOI: 10.1007/s00120-013-3186-5
- Kristiansen, Glen: The importance of pathology in the German prostate cancer study PREFERE / Kristiansen, G ... Wellek, S. .... - 12 S.
In: Der Pathologe, ISSN 1432-1963. 34(2013), 5, S. 449-460
DOI: 10.1007/s00292-013-1788-8
- Mann, Karl: Results of a double-blind, placebo-controlled pharmacotherapy trial in alcoholism conducted in Germany and comparison with the US COMBINE study / Karl Mann, Tagrid Lemenager, Sabine Hoffmann, Iris Reinhard, Derik Hermann, Anil Batra, Michael Bern… , 2013. - 10 S.
In: Addiction biology, ISSN 1369-1600. 18(2013), 6, Seite 937-946
DOI: 10.1111/adb.12012
- Wiegel, Thomas: PREFERE : the German prostatic cancer study; questions and claims surrounding study initiation in January 2013 / Wiegel, T. ... Kieser, M. ... Wellek, S. ..., 2013. - 4 S.
In: Der Urologe, ISSN 0375-4685. 52(2013), 4, Seite 576-579
- Wellek, Stefan: Cochran-armitage test versus logistic regression in the analysis of genetic association studies / Stefan Wellek, Andreas Ziegler, 2012. - 4 S.
In: Human heredity, ISSN 1423-0062. 73(2012), 1, Seite 14-17
DOI: 10.1159/000334085
- Wellek, Stefan: Cochran-armitage test versus logistic regression in the analysis of genetic association studies / Stefan Wellek; Andreas Ziegler. -
Basel: Karger, 2012. - Online-Ressource
- Mirić Tešanić, Danka: Fetal lung volume measurements using 3D ultrasonography / D. Miric Tesanic, E. Merz, S. Wellek, 2011. - 8 S.
In: Ultraschall in der Medizin, ISSN 1438-8782. 32(2011), 04, Seite 373-380
DOI: 10.1055/s-0029-1245832
- Janssen, Arnold: Exact linear rank tests for two-sample equivalence problems with continuous data / Arnold Janssen (Department of Mathematics, University of Duesseldorf), Stefan Wellek (Department of … , [November 2010]. - 23 S. : Diagramme
In: Statistica Neerlandica, ISSN 1467-9574. 64(2010), 4, Seite 482-504
DOI: 10.1111/j.1467-9574.2010.00466.x
- Schulze, Thomas Gerd: Genotype-phenotype studies in bipolar disorder showing association between the DAOA/G30 locus and persecutory delusions : a first step toward a molecular genetic classification of psychiatric phenotypes / Thomas G. Schulze, Stephanie Ohlraun, Piotr M. Czerski, Johannes Schumacher, Layla Kassem, Monika De… , 1 Nov 2005. - 8 S.
In: The American journal of psychiatry, ISSN 1535-7228. 162(2005), 11, Seite 2101-2108
DOI: 10.1176/appi.ajp.162.11.2101
- Schumann, Gunter: Analysis of genetic variations of protein tyrosine kinase fyn and their association with alcohol dependence in two independent cohorts / Gunter Schumann, Dan Rujescu, Christian Kissling, Michael Soyka, Norbert Dahmen, Ullrich W. Preuss, … , December 15, 2003. - 5 S.
In: Biological psychiatry, ISSN 1873-2402. 54(2003), 12, Seite 1422-1426
DOI: 10.1016/S0006-3223(03)00635-8
- Schumann, Gunter: No association of alcohol dependence with a NMDA-receptor 2B gene variant / G. Schumann, D. Rujescu, A. Szegedi, P. Singer, S. Wiemann, S. Wellek, I. Giegling, C. Klawe, I. Ang… , 30 January 2003. - 2 S.
In: Molecular psychiatry, ISSN 1476-5578. 8(2003), 1, Seite 11-12
DOI: 10.1038/sj.mp.4001245
- Wellek, Stefan: A distribution-free two-sample equivalence test allowing for tied observations / S. Wellek, B. Hampel, 19 April 1999. - 16 S.
In: Biometrical journal, ISSN 1521-4036. 41(1999), 2, Seite 171-186
DOI: 10.1002/(SICI)1521-4036(199905)41:2<171::AID-BIMJ171>3.0.CO;2-Y
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