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Journal of Clinical Epidemiology|February 12, 2017
Survival biases lead to flawed conclusions in observational treatment studies of influenza patientsMartin Wolkewitz, Martin Schumacher
Computer Methods and Programs in Biomedicine|July 17, 2010
Simulating and analysing infectious disease data in a heterogeneous population with migrationMartin Wolkewitz, Martin Schumacher
Statistics in Medicine|October 7, 2008
The impact of time-dependent bias in proportional hazards modellingJan Beyersmann, Martin Wolkewitz, Martin Schumacher
BMC Medical Research Methodology|July 22, 2017
Basic parametric analysis for a multi-state model in hospital epidemiologyMaja von Cube, Martin Schumacher, Martin Wolkewitz
Infection Control and Hospital Epidemiology|June 22, 2017
Multistate Modeling to Analyze Nosocomial Infection Data: An Introduction and DemonstrationMartin Wolkewitz, Maja von Cube, Martin Schumacher
BMC Medical Research Methodology|July 18, 2018
Simulation shows undesirable results for competing risks analysis with time-dependent covariates for clinical outcomesInga Poguntke, Martin Schumacher, Jan Beyersmann, et al.
Journal of Clinical Epidemiology|July 16, 2008
An easy mathematical proof showed that time-dependent bias inevitably leads to biased effect estimationJan Beyersmann, Petra Gastmeier, Martin Wolkewitz, et al.
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