Helmut Schäfer

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Flexible Designs for Genomewide Association Studies

André Scherag, Johannes Hebebrand, Helmut Schäfer, 2009, Biometrics.

An Overview of Statistical Approaches for Adaptive Designs and Design Modifications

Helmut Schäfer, Hans-Helge Müller, Nina Timmesfeld, 2006, Biometrical journal. Biometrische Zeitschrift.

PERMORY: an LD-exploiting permutation test algorithm for powerful genome-wide association testing

Helmut Schäfer, Roman Pahl, 2010, Bioinform..

Data Adaptive Interim Modification of Sample Sizes for Candidate-Gene Association Studies

Astrid Dempfle, André Scherag, Johannes Hebebrand, 2003, Human Heredity.

Höchst-integrierte Rechensysteme für CAE-Arbeitsplätz-Netzwerke

Helmut Schäfer, 1984, ARCS.

Optimal multistage designs--a general framework for efficient genome-wide association studies.

Helmut Schäfer, Hans-Helge Müller, Roman Pahl, 2009, Biostatistics.

Ein Beitrag zur Planung langfristig gültiger CAD/CAM-Gesamtkonzeptionen

Helmut Schäfer, 1989 .

PERMORY-MPI: a program for high-speed parallel permutation testing in genome-wide association studies

Thomas Letschert, Helmut Schäfer, Roman Pahl, 2012, Bioinform..

Meta-analysis of genome-wide association studies of attention-deficit/hyperactivity disorder.

Susanne Walitza, Aribert Rothenberger, Stephan Ripke, 2010, Journal of the American Academy of Child and Adolescent Psychiatry.

Novel common copy number variation for early onset extreme obesity on chromosome 11q11 identified by a genome-wide analysis

André Scherag, Johannes Hebebrand, Helmut Schäfer, 2010, Human molecular genetics.

Reducing sample sizes in genome scans: Group sequential study designs with futility stops

Andreas Ziegler, Helmut Schäfer, Inke R König, 2003, Genetic epidemiology.

Non-replication of an association of CTNNBL1 polymorphisms and obesity in a population of Central European ancestry

Harald Grallert, Thomas Illig, Iris M Heid, 2009, BMC Medical Genetics.

Power matters in closing the phenotyping gap

Martin Klingenspor, Helmut Fuchs, André Scherag, 2007, Naturwissenschaften.

Gene–environment interactions for complex traits: definitions, methodological requirements and challenges

Jenny Chang-Claude, Astrid Dempfle, André Scherag, 2008, European Journal of Human Genetics.

Melanocortin-4 receptor gene: case-control study and transmission disequilibrium test confirm that functionally relevant mutations are compatible with a major gene effect for extreme obesity.

Thomas Gudermann, Helmut Remschmidt, Johannes Hebebrand, 2003, The Journal of clinical endocrinology and metabolism.

Two New Loci for Body-Weight Regulation Identified in a Joint Analysis of Genome-Wide Association Studies for Early-Onset Extreme Obesity in French and German Study Groups

Raimund Erbel, Barbara Heude, Mark I. McCarthy, 2010, PLoS genetics.

Genome Wide Association (GWA) Study for Early Onset Extreme Obesity Supports the Role of Fat Mass and Obesity Associated Gene (FTO) Variants

Harald Grallert, Thomas Illig, Winfried Rief, 2007, PloS one.

Optimal Robust Two‐Stage Designs for Genome‐Wide Association Studies

Helmut Schäfer, T. Nguyen, Thuy Trang Nguyen, 2009, Annals of human genetics.

Molecular genetics of adult ADHD: converging evidence from genome-wide association and extended pedigree linkage studies

Susanne Walitza, Andreas Warnke, Helmut Schäfer, 2008, Journal of Neural Transmission.