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List of works by Martin Schumacher

A boosting approach for adapting the sparsity of risk prediction signatures based on different molecular levels

scientific article published in June 2014

A case-cohort approach for multi-state models in hospital epidemiology

scientific article

A competing risks analysis of bloodstream infection after stem-cell transplantation using subdistribution hazards and cause-specific hazards

scientific article published on 01 December 2007

A full competing risk analysis of hospital-acquired infections can easily be performed by a case-cohort approach

scientific article published on 26 November 2015

A general, prediction error-based criterion for selecting model complexity for high-dimensional survival models.

scientific article

A multi-state model analysis of the time from ethical approval to publication of clinical research studies

scientific article published on 27 March 2020

A multi-state model based reanalysis of the Framingham Heart Study: Is dementia incidence really declining?

scientific article published on 14 October 2019

A note on statistical association and causality derived from epidemiological ICU data.

scientific article published in March 2010

A note on variance estimation of the Aalen-Johansen estimator of the cumulative incidence function in competing risks, with a view towards left-truncated data

scientific article

A simulation approach for power calculation in large cohort studies based on multistate models

scientific article published on 02 May 2018

A test for publication bias in meta-analysis with sparse binary data

scientific article

A wild bootstrap approach for the Aalen-Johansen estimator.

scientific article published on 16 February 2018

Adapting prediction error estimates for biased complexity selection in high-dimensional bootstrap samples.

scientific article published on 14 March 2008

Adverse event development in clinical oncology trials

scientific article published on 01 July 2016

Aggressive versus conservative initiation of antibiotics

scientific article published on 01 May 2013

Allowing for mandatory covariates in boosting estimation of sparse high-dimensional survival models

scientific article

An easy mathematical proof showed that time-dependent bias inevitably leads to biased effect estimation

scientific article

An overview of techniques for linking high-dimensional molecular data to time-to-event endpoints by risk prediction models

scientific article

Analyzing the impact of duration of ventilation, hospitalization, and ventilation episodes on the risk of pneumonia

scientific article published on 18 February 2019

Application of multistate models in hospital epidemiology: advances and challenges

scientific article published on 14 January 2011

Are large trials less reliable than small trials?

scientific article published on 28 May 2009

Artificial neural networks for diagnosis and prognosis in prostate cancer

scientific article

Assessment of survival prediction models based on microarray data

scientific article

Basic parametric analysis for a multi-state model in hospital epidemiology

scientific article published on 20 July 2017

Bias due to censoring of deaths when calculating extra length of stay for patients acquiring a hospital infection.

scientific article

Boosting for high-dimensional time-to-event data with competing risks

scientific article

Boosting qualifies capture-recapture methods for estimating the comprehensiveness of literature searches for systematic reviews

scientific article published on 17 June 2011

Changes in Rates of Ventilator-Associated Pneumonia.

scientific article

Clinical outcomes of health-care-associated infections and antimicrobial resistance in patients admitted to European intensive-care units: a cohort study.

scientific article published on 2 December 2010

Clinical research projects at a German medical faculty: follow-up from ethical approval to publication and citation by others

scientific article published on September 2008

Cluster-localized sparse logistic regression for SNP data.

scientific article

Cohort studies were found to be frequently biased by missing disease information due to death

article

Comment on 'Network-constrained regularization and variable selection for analysis of genomic data'.

scientific article published on 4 August 2008

Comments on 'The performance of different propensity score methods for estimating marginal odds ratios'

scientific article published on 01 August 2008

Comments on ‘Empirical vs natural weighting in random effects meta-analysis’ by JJ Shuster, Statistics in Medicine 2009; 26, Published online, DOI: 10.1002/sim.3607

scientific article published on 01 December 2010

Comparison of complex modeling strategies for prediction of a binary outcome based on a few, highly correlated predictors

scientific article published on 30 March 2020

Competing risk bias was common in a prominent medical journal.

scientific article published in August 2016

Competing risks and multistate models

scientific article

Correction: Neuraminidase Inhibitors and Hospital Mortality in British Patients with H1N1 Influenza A: A Re-Analysis of Observational Data

scientific article published on 6 April 2017

Doug Altman: Driving critical appraisal and improvements in the quality of methodological and medical research

scientific article published on 08 July 2020

Dynamic prediction: A challenge for biostatisticians, but greatly needed by patients, physicians and the public

scientific article published on 25 March 2019

Erythropoietin or Darbepoetin for patients with cancer - meta-analysis based on individual patient data

scientific article (publication date: 8 July 2009)

Erythropoietin or Darbepoetin for patients with cancer - meta-analysis based on individual patient data

scientific article

Estimands to quantify prolonged hospital stay associated with nosocomial infections.

scientific article published on 31 May 2019

Estimating hazard ratios in cohort data with missing disease information due to death.

scientific article

Estimators and confidence intervals for the marginal odds ratio using logistic regression and propensity score stratification.

scientific article published in March 2010

Evidence from nonrandomized studies: a case study on the estimation of causal effects

scientific article published on 11 March 2008

Fate of Clinical Research Studies After Ethical Approval—Follow-Up of Study Protocols Until Publication

scholarly article published 2016

Fate of clinical research studies after ethical approval--follow-up of study protocols until publication

scientific article

Follow-on rifaximin for the prevention of recurrence following standard treatment of infection with Clostridium difficile: a competing risks analysis provides a full picture of possible treatment effects

scientific article published on 28 December 2018

Hospital-acquired infections--appropriate statistical treatment is urgently needed!

scientific article published on 14 September 2013

How Does Empagliflozin Reduce Cardiovascular Mortality? Insights From a Mediation Analysis of the EMPA-REG OUTCOME Trial

scientific article published on 4 December 2017

How many infections are caused by patient-to-patient transmission in intensive care units?

scientific article

Identifying Prognostic SNPs in Clinical Cohorts: Complementing Univariate Analyses by Resampling and Multivariable Modeling

scientific article published on 9 May 2016

Improving nested case-control studies to conduct a full competing-risks analysis for nosocomial infections

scientific article published on 30 August 2018

Incidence Densities in a Competing Events Analysis ⬇️

scientific article published on September 3, 2010

Incidence in ICU populations: how to measure and report it?

scientific article published on 10 May 2014

Incorporating pathway information into boosting estimation of high-dimensional risk prediction models

scientific article published on 13 January 2009

Inflation of type I error rate in two statistical tests for the detection of publication bias in meta-analyses with binary outcomes

scientific article

Integrating multiple molecular sources into a clinical risk prediction signature by extracting complementary information

scientific article

Interpreting and comparing risks in the presence of competing events

scientific article published on 21 August 2014

Letter to the editor

scientific article published on 06 July 2009

Measures of prediction error for survival data with longitudinal covariates.

scientific article

Meta-analysis and the Surgeon General's report on smoking and health.

scientific article published in January 2014

Meta-analysis for aggregated survival data with competing risks: a parametric approach using cumulative incidence functions

scientific article published on 20 September 2015

Methodological challenges in using point-prevalence versus cohort data in risk factor analyses of nosocomial infections.

scientific article

Missing information caused by death leads to bias in relative risk estimates

scientific article published on 30 June 2014

Misspecified regression model for the subdistribution hazard of a competing risk

scientific article published on 01 March 2007

Modeling the effect of time-dependent exposure on intensive care unit mortality

scientific article published on 31 January 2009

Modelling multiple thresholds in meta-analysis of diagnostic test accuracy studies

scientific article

Mortality associated with in-hospital bacteraemia caused by Staphylococcus aureus: a multistate analysis with follow-up beyond hospital discharge ⬇️

scientific article published on November 23, 2010

Multilevel competing risk models to evaluate the risk of nosocomial infection

scientific article

Multiple time scales in modeling the incidence of infections acquired in intensive care units

scientific article

Multistate Modeling to Analyze Nosocomial Infection Data: An Introduction and Demonstration

scientific article

Nested case-control studies in cohorts with competing events

scientific article published on January 2014

Netboost: Boosting-supported Network Analysis Improves High-Dimensional Omics Prediction in Acute Myeloid Leukemia and Huntington's Disease

scientific article published on 01 May 2020

Neuraminidase Inhibitors and Hospital Mortality in British Patients with H1N1 Influenza A: A Re-Analysis of Observational Data

scientific article

Nonparametric inference for the cumulative incidence function of a competing risk, with an emphasis on confidence bands in the presence of left-truncation

scientific article published on 18 May 2012

Nosocomial infection, length of stay, and time-dependent bias

scientific article

On the relation between the cause-specific hazard and the subdistribution rate for competing risks data: The Fine-Gray model revisited

scientific article published on 04 March 2020

Paediatric hospital-acquired bacteraemia in developing countries

scientific article published in The Lancet

Parallelized prediction error estimation for evaluation of high-dimensional models.

scientific article published on 28 January 2009

Procalcitonin as a diagnostic marker for sepsis

scientific article published in December 2013

Proportional subdistribution hazards modeling offers a summary analysis, even if misspecified

scientific article published in March 2010

Quantification and interpretation of attributable mortality in core clinical infectious disease journals

scientific article published on 08 September 2020

Quantifying the predictive accuracy of time-to-event models in the presence of competing risks

scientific article published on 14 January 2011

RE: "COMPARISON OF STATISTICAL APPROACHES FOR DEALING WITH IMMORTAL TIME BIAS IN DRUG EFFECTIVENESS STUDIES".

scientific article published on 16 November 2016

RE: "Risk Set Matching to Assess the Impact of Hospital-Acquired Bloodstream Infections."

scientific article published on 01 June 2019

RE: "Selective Cutoff Reporting in Studies of Diagnostic Test Accuracy: A Comparison of Conventional and Individual-Patient-Data Meta-Analyses of the Patient Health Questionnaire - 9 Depression Screening Tool".

scientific article

Re: "Incidence of dementia among participants and nonparticipants in a longitudinal study of cognitive aging".

scientific article published on 28 January 2015

Recombinant human erythropoiesis-stimulating agents and mortality in patients with cancer: a meta-analysis of randomised trials

scientific article

Recovery of original individual person data (IPD) inferences from empirical IPD summaries only: Applications to distributed computing under disclosure constraints

scientific article published on 14 January 2020

Regression modelling in hospital epidemiology: a statistical note

scientific article published on 4 September 2008

Relapse- and Immunosuppression-Free Survival after Hematopoietic Stem Cell Transplantation: How Can We Assess Treatment Success for Complex Time-to-Event Endpoints?

scientific article published on 09 January 2020

Reporting of eligibility criteria of randomised trials: cohort study comparing trial protocols with subsequent articles

scientific article

Representativeness of the surveillance data in the intensive care unit component of the German nosocomial infections surveillance system.

scientific article

Risk factors disrupting mucosal integrity and subsequent vancomycin-resistant enterococcus infection

scientific article published in January 2010

Risk factors for the development of nosocomial pneumonia and mortality on intensive care units: application of competing risks models

scientific article published on 2 April 2008

Risk of disease recurrence and survival in patients with multiple myeloma: A German study group analysis using a conditional survival approach with long-term follow-up of 815 patients

scientific article published on 27 May 2020

Simpson's paradox visualized: the example of the rosiglitazone meta-analysis

scientific article

Simulating and analysing infectious disease data in a heterogeneous population with migration

scientific article

Simulating competing risks data in survival analysis

scientific article

Simulation shows undesirable results for competing risks analysis with time-dependent covariates for clinical outcomes

scientific article published on 16 July 2018

Sole reliance on I2 may mislead

scientific article

Statistical and methodological concerns about the beneficial effect of neuraminidase inhibitors on mortality.

scientific article published on 16 June 2014

Statistically significant papers in psychiatry were cited more often than others

scientific article (publication date: September 2007)

Summary ROC curve based on a weighted Youden index for selecting an optimal cutpoint in meta-analysis of diagnostic accuracy

scientific article published on 01 December 2010

Survival biases lead to flawed conclusions in observational treatment studies of influenza patients

scientific article

The Impact of Early Adequate Treatment on Extubation and Discharge Alive of Patients With Pseudomonas aeruginosa-Related Ventilator-Associated Pneumonia

scientific article published on 01 October 2018

The combined association of alcohol consumption with dementia risk is likely biased due to lacking account of death cases.

scientific article

The health and economic burden of bloodstream infections caused by antimicrobial-susceptible and non-susceptible Enterobacteriaceae and Staphylococcus aureus in European hospitals, 2010 and 2011: a multicentre retrospective cohort study

scientific article published on August 2016

The impact of time-dependent bias in proportional hazards modelling

scientific article published in December 2008

The population-attributable fraction for time-dependent exposures and competing risks-A discussion on estimands

scientific article published on 04 June 2019

The population-attributable fraction for time-dependent exposures using dynamic prediction and landmarking

scientific article published on 19 June 2019

The relationship between quality of research and citation frequency

scientific article

Time-dependent covariates in the proportional subdistribution hazards model for competing risks

scientific article published on 22 April 2008

Time-dependent study entries and exposures in cohort studies can easily be sources of different and avoidable types of bias

scientific article published in November 2012

Transmission-associated nosocomial infections: prolongation of intensive care unit stay and risk factor analysis using multistate models.

scientific article

Treatment of hospital-acquired pneumonia

scholarly article by Martin Wolkewitz et al published October 2011 in Lancet Infectious Diseases

Treatment-effect estimates adjusted for small-study effects via a limit meta-analysis

scientific article published on 22 July 2010

Two Pitfalls in Survival Analyses of Time-Dependent Exposure: A Case Study in a Cohort of Oscar Nominees

Understanding competing risks: a simulation point of view

scientific article

Undue reliance on I(2) in assessing heterogeneity may mislead

scientific article

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