Martin Schumacher
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Computer Science
Martin Schumacher's Degrees
- PhD Computer Science Stanford University
- Masters Computer Science University of California, Berkeley
- Bachelors Computer Science University of California, Berkeley
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(Suggest an Edit or Addition)Martin Schumacher's Published Works
Number of citations in a given year to any of this author's works
Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author
Published Works
- Effects of chemotherapy and hormonal therapy for early breast cancer on recurrence and 15-year survival: an overview of the randomised trials (2005) (6940)
- Tamoxifen for early breast cancer: an overview of the randomised trials (1998) (3764)
- Dangers of using "optimal" cutpoints in the evaluation of prognostic factors. (1994) (1100)
- Undue reliance on I2 in assessing heterogeneity may mislead (2008) (788)
- Assessment and comparison of prognostic classification schemes for survival data. (1999) (709)
- A bootstrap resampling procedure for model building: application to the Cox regression model. (1992) (597)
- Recombinant human erythropoiesis-stimulating agents and mortality in patients with cancer: a meta-analysis of randomised trials (2009) (554)
- A European study of HLA-B in Stevens–Johnson syndrome and toxic epidermal necrolysis related to five high-risk drugs (2008) (543)
- How Does Empagliflozin Reduce Cardiovascular Mortality? Insights From a Mediation Analysis of the EMPA-REG OUTCOME Trial (2017) (492)
- Maximally selected rank statistics (1992) (479)
- A marker for Stevens-Johnson syndrome …: ethnicity matters (2006) (464)
- Competing Risks and Multistate Models with R (2011) (378)
- Incidence of Dementia over Three Decades in the Framingham Heart Study. (2016) (371)
- Consistent Estimation of the Expected Brier Score in General Survival Models with Right‐Censored Event Times (2006) (363)
- Clinical outcomes of health-care-associated infections and antimicrobial resistance in patients admitted to European intensive-care units: a cohort study. (2011) (356)
- Goserelin versus cyclophosphamide, methotrexate, and fluorouracil as adjuvant therapy in premenopausal patients with node-positive breast cancer: The Zoladex Early Breast Cancer Research Association Study. (2002) (334)
- Comprehensive survival analysis of a cohort of patients with Stevens-Johnson syndrome and toxic epidermal necrolysis. (2013) (313)
- On the misuses of artificial neural networks for prognostic and diagnostic classification in oncology. (2000) (283)
- The Performance of Risk Prediction Models (2008) (246)
- Prevalence of nosocomial infections in representative German hospitals. (1998) (238)
- Systemic Immunomodulating Therapies for Stevens-Johnson Syndrome and Toxic Epidermal Necrolysis: A Systematic Review and Meta-analysis (2017) (205)
- Allowing for mandatory covariates in boosting estimation of sparse high-dimensional survival models (2008) (187)
- Simulating competing risks data in survival analysis (2009) (182)
- Estimating a time‐dependent concordance index for survival prediction models with covariate dependent censoring (2013) (179)
- HLA-A*31:01 and different types of carbamazepine-induced severe cutaneous adverse reactions: an international study and meta-analysis (2013) (175)
- A simple test of the proportional hazards assumption (1987) (173)
- Empirical Transition Matrix of Multi-State Models: The etm Package (2011) (171)
- Erythropoietin or Darbepoetin for patients with cancer--meta-analysis based on individual patient data. (2009) (162)
- An easy mathematical proof showed that time-dependent bias inevitably leads to biased effect estimation. (2008) (161)
- Assessment of quality of life in clinical trials. (1991) (161)
- A concise revised Myeloma Comorbidity Index as a valid prognostic instrument in a large cohort of 801 multiple myeloma patients (2017) (161)
- Interpreting and comparing risks in the presence of competing events (2014) (156)
- Treatment-effect estimates adjusted for small-study effects via a limit meta-analysis. (2011) (153)
- Role of isolated locoregional recurrence of breast cancer: results of four prospective studies. (2000) (149)
- Randomized 2 x 2 trial evaluating hormonal treatment and the duration of chemotherapy in node-positive breast cancer patients. German Breast Cancer Study Group. (1994) (146)
- Use of Multistate Models to Assess Prolongation of Intensive Care Unit Stay Due to Nosocomial Infection (2006) (146)
- The relationship between quality of research and citation frequency (2006) (145)
- Resampling and cross-validation techniques: a tool to reduce bias caused by model building? (1997) (143)
- How many infections are caused by patient-to-patient transmission in intensive care units?* (2005) (141)
- Survival analyses from the ZEBRA study. goserelin (Zoladex) versus CMF in premenopausal women with node-positive breast cancer. (2003) (137)
- Risk factors for the development of nosocomial pneumonia and mortality on intensive care units: application of competing risks models (2008) (137)
- The validity of inferences based on incomplete observations in disease state models. (1991) (135)
- Risk of cancer incidence before the age of 15 years after exposure to ionising radiation from computed tomography: results from a German cohort study (2015) (134)
- Geriatric assessment in multiple myeloma patients: validation of the International Myeloma Working Group (IMWG) score and comparison with other common comorbidity scores (2016) (134)
- Prospective population-based study of viral lower respiratory tract infections in children under 3 years of age (the PRI.DE study) (2004) (133)
- 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 (2016) (131)
- Efron‐Type Measures of Prediction Error for Survival Analysis (2007) (126)
- Conditional Survival: A Useful Concept to Provide Information on How Prognosis Evolves over Time (2015) (124)
- Modelling multiple thresholds in meta-analysis of diagnostic test accuracy studies (2016) (117)
- Evaluating the effect of optimized cutoff values in the assessment of prognostic factors (1996) (114)
- Assessment of survival prediction models based on microarray data (2007) (112)
- On pseudo-values for regression analysis in competing risks models (2009) (112)
- Time-dependent covariates in the proportional subdistribution hazards model for competing risks. (2008) (112)
- Sample size considerations for the evaluation of prognostic factors in survival analysis. (2000) (108)
- Interleukin-15 Is Associated with Severity and Mortality in Stevens-Johnson Syndrome/Toxic Epidermal Necrolysis. (2017) (106)
- Nosocomial and community-acquired infections in Germany. Summary of the results of the first national prevalence study (NIDEP) (1997) (106)
- Assessment of Optimal Selected Prognostic Factors (2002) (104)
- Bone mineral density in premenopausal women treated for node-positive early breast cancer with 2 years of goserelin or 6 months of cyclophosphamide, methotrexate and 5-fluorouracil (CMF) (2003) (101)
- Economic impact of community-acquired and nosocomial lower respiratory tract infections in young children in Germany (2005) (99)
- Analysis of randomized and nonrandomized patients in clinical trials using the comprehensive cohort follow-up study design. (1992) (99)
- Modeling Spatiotemporal Forest Health Monitoring Data (2009) (98)
- Genome-wide association study of Stevens-Johnson Syndrome and Toxic Epidermal Necrolysis in Europe (2011) (98)
- Prognostic and Predictive Effects of Immunohistochemical Factors in High-Risk Primary Breast Cancer Patients (2006) (97)
- Simpson's paradox visualized: The example of the Rosiglitazone meta-analysis (2008) (95)
- Competing Risks and Multistate Models (2012) (94)
- Modelling the effects of standard prognostic factors in node-positive breast cancer (1999) (93)
- Confidence intervals for the effect of a prognostic factor after selection of an ‘optimal’ cutpoint (2004) (92)
- Quality of life assessment in clinical cancer research. (1994) (92)
- Understanding competing risks: a simulation point of view (2011) (90)
- Randomized and non-randomized patients in clinical trials: experiences with comprehensive cohort studies. (1995) (90)
- Estimation of extra hospital stay attributable to nosocomial infections: heterogeneity and timing of events. (2000) (90)
- Nosocomial Infection, Length of Stay, and Time-Dependent Bias (2009) (89)
- The impact of time‐dependent bias in proportional hazards modelling (2008) (89)
- Prolongation of hospital stay and extra costs due to ventilator-associated pneumonia in an intensive care unit (1992) (89)
- Boosting for high-dimensional time-to-event data with competing risks (2009) (88)
- Does the Architecture of Hospital Facilities Influence Nosocomial Infection Rates? A Systematic Review (2004) (88)
- A competing risks analysis of bloodstream infection after stem‐cell transplantation using subdistribution hazards and cause‐specific hazards (2007) (87)
- Hospital-acquired infections--appropriate statistical treatment is urgently needed! (2013) (86)
- RANDOMIZED AND NON‐RANDOMIZED PATIENTS IN CLINICAL TRIALS: EXPERIENCES WITH COMPREHENSIVE COHORT STUDIES (1996) (86)
- Inflation of type I error rate in two statistical tests for the detection of publication bias in meta‐analyses with binary outcomes (2002) (84)
- Incorporating pathway information into boosting estimation of high-dimensional risk prediction models (2009) (84)
- Statistical analysis of quality of life data in cancer clinical trials. (1990) (84)
- High-dose chemotherapy with autologous hematopoietic stem-cell support compared with standard-dose chemotherapy in breast cancer patients with 10 or more positive lymph nodes: first results of a randomized trial. (2004) (80)
- Time-dependent study entries and exposures in cohort studies can easily be sources of different and avoidable types of bias. (2012) (80)
- Classification and regression trees (CART) used for the exploration of prognostic factors measured on different scales (1994) (79)
- The impact of heterogeneity on the comparison of survival times. (1987) (77)
- Statistically significant papers in psychiatry were cited more often than others. (2007) (73)
- Radiation therapy and tamoxifen after breast-conserving surgery: updated results of a 2 x 2 randomised clinical trial in patients with low risk of recurrence. (2010) (73)
- Mortality associated with in-hospital bacteraemia caused by Staphylococcus aureus: a multistate analysis with follow-up beyond hospital discharge. (2011) (72)
- Tumor-cell number and viability as quality and efficacy parameters of autologous virus-modified cancer vaccines in patients with breast or ovarian cancer. (1997) (72)
- Radiation therapy after breast-conserving surgery; first results of a randomised clinical trial in patients with low risk of recurrence. (2004) (72)
- Proportional subdistribution hazards modeling offers a summary analysis, even if misspecified (2010) (71)
- Effects of covariate omission and categorization when analysing randomized trials with the Cox model. (1997) (71)
- Attributable Mortality due to Nosocomial Infections (2007) (67)
- Quality of life in goserelin-treated versus cyclophosphamide + methotrexate + fluorouracil-treated premenopausal and perimenopausal patients with node-positive, early breast cancer: the Zoladex Early Breast Cancer Research Association Trialists Group. (2003) (66)
- Evaluation of SCORTEN on a Cohort of Patients With Stevens-Johnson Syndrome and Toxic Epidermal Necrolysis Included in the RegiSCAR Study (2011) (65)
- Quantifying the Predictive Performance of Prognostic Models for Censored Survival Data with Time‐Dependent Covariates (2008) (65)
- Duration of adjuvant chemotherapy for breast cancer: a joint analysis of two randomised trials investigating three versus six courses of CMF (2002) (64)
- Risk factor analysis of blood stream infection and pneumonia in neutropenic patients after peripheral blood stem-cell transplantation (2007) (63)
- Modeling the effect of time-dependent exposure on intensive care unit mortality (2009) (60)
- Outcome-oriented cutpoints in analysis of quantitative exposures. (1994) (59)
- Quantifying the predictive accuracy of time‐to‐event models in the presence of competing risks (2011) (59)
- Tumor-Cell Number and Viability as Quality and Efficacy Parameters of Autologous Virus-Modified Cancer Vaccines in Patients With Breast or Ovarian Cancer (1997) (56)
- Erratum to: Risk of cancer incidence before the age of 15 years after exposure to ionising radiation from computed tomography: results from a German cohort study (2015) (55)
- Application of multistate models in hospital epidemiology: Advances and challenges (2011) (55)
- Summary ROC curve based on a weighted Youden index for selecting an optimal cutpoint in meta‐analysis of diagnostic accuracy (2010) (54)
- A test for publication bias in meta‐analysis with sparse binary data (2007) (54)
- Prevalence and risk factors for nosocomial lower respiratory tract infections in German hospitals. (1998) (53)
- Misspecified regression model for the subdistribution hazard of a competing risk by Latouche A, Boisson V, Chevret S and Porcher R. Statistics in Medicine 2006; DOI: 10.2002/sim.2600 (2007) (53)
- Adapting Prediction Error Estimates for Biased Complexity Selection in High-Dimensional Bootstrap Samples (2008) (53)
- Evidence from nonrandomized studies: a case study on the estimation of causal effects. (2008) (51)
- Penalized logistic regression with low prevalence exposures beyond high dimensional settings (2019) (49)
- Analysis of risk factors for nosocomial infections--results from the first national prevalence survey in Germany (NIDEP Study, Part 1). (1997) (49)
- Added hospital stay due to wound infections following cardiac surgery. (1992) (48)
- Artificial neural networks for diagnosis and prognosis in prostate cancer. (2002) (47)
- Long- and medium-term ozone effects on lung growth including a broad spectrum of exposure (2004) (47)
- Sample sizes for clinical trials with time-to-event endpoints and competing risks. (2005) (47)
- Importance of the Surveillance Method: National Prevalence Studies on Nosocomial Infections and the Limits of Comparison (1998) (46)
- How to Assess Prognostic Models for Survival Data: A Case Study in Oncology (2003) (45)
- A Comparison of Regression Models for the Analysis of Ordered Categorical Data (1991) (45)
- The practical utility of incorporating model selection uncertainty into prognostic models for survival data (2005) (45)
- Two Pitfalls in Survival Analyses of Time-Dependent Exposure: A Case Study in a Cohort of Oscar Nominees (2010) (44)
- Fate of Clinical Research Studies after Ethical Approval – Follow-Up of Study Protocols until Publication (2014) (43)
- Clinical research projects at a German medical faculty: follow-up from ethical approval to publication and citation by others (2008) (42)
- Incidence densities in a competing events analysis. (2010) (42)
- The prognostic effect of histological tumor grade in node-negative breast cancer patients (2004) (42)
- Blood Hemoglobin Level and Treatment Outcome of Early Breast Cancer (2004) (42)
- Large registry analysis to accurately define second malignancy rates and risks in a well-characterized cohort of 744 consecutive multiple myeloma patients followed-up for 25 years (2015) (41)
- Experience With Two Validation Methods in a Prevalence Survey on Nosocomial Infections (1998) (41)
- Efficient Risk Set Sampling when a Time-dependent Exposure Is Present (2009) (41)
- Eight-year results of a prospective non-randomised study on therapy of small breast cancer. The German Breast Cancer Study Group (GBSG). (1998) (40)
- Estimators and confidence intervals for the marginal odds ratio using logistic regression and propensity score stratification (2010) (40)
- How many nosocomial infections are missed if identification is restricted to patients with either microbiology reports or antibiotic administration? (1999) (40)
- HLA‐B*57:01 confers genetic susceptibility to carbamazepine‐induced SJS/TEN in Europeans (2019) (40)
- 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 (2010) (40)
- Multi-state model for studying an intermediate event using time-dependent covariates: application to breast cancer (2013) (39)
- The prognostic effect of histological tumour grade in node-negative breast cancer patients (1993) (39)
- Validation of Surveillance in the Intensive Care Unit Component of the German Nosocomial Infections Surveillance System (2007) (35)
- Reporting of eligibility criteria of randomised trials: cohort study comparing trial protocols with subsequent articles (2011) (35)
- Comparison of the Cox model and the regression tree procedure in analysing a randomized clinical trial. (1993) (35)
- Therapy of small breast cancer: a prospective study on 1036 patients with special emphasis on prognostic factors. (1992) (34)
- Multilevel competing risk models to evaluate the risk of nosocomial infection (2014) (34)
- Simulation shows undesirable results for competing risks analysis with time-dependent covariates for clinical outcomes (2018) (33)
- Unbiased assessment of treatment effects on disease recurrence and survival in clinical trials. (1983) (33)
- Performance of a novel microarray multiplex PCR for the detection of 23 respiratory pathogens (SYMP-ARI study) (2012) (32)
- Transmission-associated nosocomial infections: prolongation of intensive care unit stay and risk factor analysis using multistate models. (2008) (31)
- On functional misspecification of covariates in the Cox regression model (2001) (30)
- Multistate Modeling to Analyze Nosocomial Infection Data: An Introduction and Demonstration (2017) (30)
- Estimating summary functionals in multistate models with an application to hospital infection data (2011) (30)
- Captopril versus digoxin in patients with coronary artery disease and mild heart failure. A prospective, double-blind, placebo-controlled multicenter study. The CADS Study Group. (1993) (29)
- Long-term prognosis of breast cancer patients with 10 or more positive lymph nodes treated with CMF. (2001) (29)
- Validation of existing and development of new prognostic classification schemes in node negative breast cancer (2004) (28)
- Mediators of the improvement in heart failure outcomes with empagliflozin in the EMPA‐REG OUTCOME trial (2017) (28)
- Randomized 2 x 2 trial evaluating hormonal treatment and the duration of chemotherapy in node-positive breast cancer patients: an update based on 10 years' follow-up. German Breast Cancer Study Group. (2000) (28)
- Validation of existing and development of new prognostic classification schemes in node negative breast cancer (2004) (27)
- Estimation of prolongation of hospital stay attributable to nosocomial infections: New approaches based on multistate models (1996) (27)
- Randomized Study Comparing Carboplatin/Cyclophosphamide and Cisplatin/Cyclophosphamide as First-Line Treatment in Patients with Stage III/IV Epithelial Ovarian Cancer and Small Volume Disease☆☆☆ (1997) (26)
- A wild bootstrap approach for the Aalen–Johansen estimator (2018) (26)
- c-erbB2 expression in correlation to other biological parameters of breast cancer (2005) (26)
- Maximally Selected Rank Statistics for Dose-Response Problems (2002) (26)
- An analysis of two prevalence surveys of nosocomial infection in German intensive care units. (1997) (25)
- Prevalence of primary bloodstream infections in representative German hospitals and their association with central and peripheral vascular catheters. (1998) (25)
- Representativeness of the Surveillance Data in the Intensive Care Unit Component of the German Nosocomial Infections Surveillance System (2010) (25)
- On the Problem of Using ‘Optimal’ Cutpoints in the Assessment of Quantitative Prognostic Factors (2001) (25)
- Measures of prediction error for survival data with longitudinal covariates (2011) (24)
- Randomized trial of high-dose adjuvant chemotherapy with autologous hematopoietic stem-cell support versus standard-dose chemotherapy in breast cancer patients with 10 or more positive lymph nodes: overall survival after 6 years of follow-up. (2008) (23)
- Estimating the functional form of a continuous covariate's effect on survival time (2006) (23)
- Sparse regression techniques in low-dimensional survival data settings (2010) (23)
- Comment on "network-constrained regularization and variable selection for analysis of genomic data" (2008) (22)
- Competing risk bias was common in a prominent medical journal. (2016) (22)
- Scoring system for nosocomial pneumonia in ICUs (1996) (22)
- An investigation on measures of explained variation in survival analysis (1995) (22)
- Importance of the surveillance method: national prevalence studies on nosocomial infections and the limits of comparison. (1998) (22)
- Analysing adverse events by time‐to‐event models: the CLEOPATRA study (2016) (22)
- A randomised trial of goserelin versus control after adjuvant, risk-adapted chemotherapy in premenopausal patients with primary breast cancer - GABG-IV B-93. (2007) (21)
- On the relation between the cause‐specific hazard and the subdistribution rate for competing risks data: The Fine–Gray model revisited (2020) (21)
- Survival biases lead to flawed conclusions in observational treatment studies of influenza patients. (2017) (21)
- Comments on ‘The performance of different propensity score methods for estimating marginal odds ratios’ by Peter C. Austin, Statistics in Medicine 2007; 26(16):3078–3094 (2008) (21)
- [Nosocomial infections intensive care units. A nation-wide prevalence study]. (1996) (21)
- Health and Economic Impacts of Antibiotic Resistance in European Hospitals – Outlook on the BURDEN Project (2008) (21)
- Incidence in ICU populations: how to measure and report it? (2014) (21)
- An overview of techniques for linking high‐dimensional molecular data to time‐to‐event endpoints by risk prediction models (2011) (20)
- Nosocomial wound infections: a prevalence study and analysis of risk factors. (1998) (20)
- Competing risks need to be considered in survival analysis models for cardiovascular outcomes (2017) (20)
- Parallelized prediction error estimation for evaluation of high-dimensional models (2009) (19)
- Prognostic Factor Studies (2012) (19)
- Basic parametric analysis for a multi-state model in hospital epidemiology (2017) (19)
- Higher number of multidisciplinary tumor board meetings per case leads to improved clinical outcome (2020) (19)
- Tailoring sparse multivariable regression techniques for prognostic single‐nucleotide polymorphism signatures (2013) (18)
- Statistical epidemic modeling with hospital outbreak data (2008) (18)
- Missing information caused by death leads to bias in relative risk estimates. (2014) (18)
- Control procedures and estimators of the false discovery rate and their application in low-dimensional settings: an empirical investigation (2018) (17)
- Therapy of small breast cancer - four-year results of a prospective non-randomized study (1995) (17)
- A full competing risk analysis of hospital-acquired infections can easily be performed by a case-cohort approach. (2016) (17)
- Analysis of Clinical Cohort Data Using Nested Case-control and Case-cohort Sampling Designs (2015) (17)
- Tamoxifen versus control after adjuvant, risk-adapted chemotherapy in postmenopausal, receptor-negative patients with breast cancer: a randomized trial (GABG-IV D-93)--the German Adjuvant Breast Cancer Group. (2005) (16)
- Exposure density sampling: Dynamic matching with respect to a time‐dependent exposure (2019) (16)
- Cluster-Localized Sparse Logistic Regression for SNP Data (2012) (16)
- Improving the Prognostic Ability through Better Use of Standard Clinical Data - The Nottingham Prognostic Index as an Example (2016) (16)
- Recovery of original individual person data (IPD) inferences from empirical IPD summaries only: Applications to distributed computing under disclosure constraints (2020) (16)
- 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 (2020) (15)
- [Nosocomial infections in Germany--assessment and prevention. NIDEP Study, 1: On prevalence in surgery]. (1996) (15)
- Landmark prediction of nosocomial infection risk to disentangle short- and long-stay patients. (2017) (15)
- The effect of oral contraceptive use on the prognosis of node positive breast cancer patients. (1998) (15)
- Estimands to quantify prolonged hospital stay associated with nosocomial infections (2019) (15)
- Identifying Outliers of Antibiotic Usage in Prevalence Studies on Nosocomial Infections (2000) (15)
- Multiple time scales in modeling the incidence of infections acquired in intensive care units (2016) (14)
- Identification of a 17-protein signature in the serum of lung cancer patients. (2010) (14)
- Implementing strategic bundles for infection prevention and management (2012) (14)
- Randomized trial on the effect of radiotherapy in addition to 6 cycles CMF in node‐positive breast‐cancer patients (2000) (14)
- An Experimental Evaluation of Boosting Methods for Classification (2010) (14)
- A general, prediction error‐based criterion for selecting model complexity for high‐dimensional survival models (2010) (14)
- Interventions to control nosocomial infections: study designs and statistical issues. (2014) (13)
- Long-Term Follow-Up of Patients in Four Prospective Studies of the German Breast Cancer Study Group (GBSG): A Summary of Key Results (2002) (13)
- Breast preservation versus mastectomy in early breast cancer--1991 update of the GBSG 1--protocol and prognostic factors. The German Breast Cancer Study Group. (1992) (13)
- Quality control review for radiotherapy of small breast cancer: analysis of 708 patients in the GBSG I trial. German Breast Study Group (GBSG). (1993) (13)
- Meta-analysis and the Surgeon General's report on smoking and health. (2014) (12)
- A coordinate-wise optimization algorithm for the Fused Lasso (2010) (12)
- Neuraminidase Inhibitors and Hospital Mortality in British Patients with H1N1 Influenza A: A Re-Analysis of Observational Data (2016) (12)
- Boosting qualifies capture-recapture methods for estimating the comprehensiveness of literature searches for systematic reviews. (2011) (12)
- Long-term results of brachytherapy with temporary iodine-125 seeds in children with low-grade gliomas. (2011) (12)
- Combining randomized and nonrandomized patients in the statistical analysis of clinical trials. (1988) (12)
- Accurate Variance Estimation for Prevalence Ratios (2007) (12)
- The German Clinical Trials Register: challenges and chances of implementing a bilingual registry (2009) (12)
- Recombinant Human Erythropoiesis Stimulating Agents in Cancer Patients: Individual Patient Data Meta-Analysis on Behalf of the EPO IPD Meta-Analysis Collaborative Group (2008) (11)
- [Nosocomial infections in Germany. Their epidemiology in old and new Federal Länder]. (1996) (11)
- The benefit of data-based model complexity selection via prediction error curves in time-to-event data (2011) (11)
- Are KISS Data Representative of German Intensive Care Units? (2006) (11)
- Dynamic prediction: A challenge for biostatisticians, but greatly needed by patients, physicians and the public (2019) (11)
- Nested case-control studies in cohorts with competing events. (2014) (11)
- The use of imperfect diagnostic tests had an impact on prevalence estimation. (2007) (11)
- Nonparametric estimation of pregnancy outcome probabilities (2017) (10)
- Integrating multiple molecular sources into a clinical risk prediction signature by extracting complementary information (2016) (10)
- The combined association of alcohol consumption with dementia risk is likely biased due to lacking account of death cases (2017) (10)
- Considerations on what constitutes a ‘qualified statistician’ in regulatory guidelines (2012) (10)
- Clinical response by palpation during primary systemic therapy with four dose-dense cycles doxorubicin and docetaxel in patients with operable breast cancer: further results from a randomised controlled trial. (2007) (10)
- Causal inference with multistate models—estimands and estimators of the population attributable fraction (2019) (10)
- Initially fewer bloodstream infections for allogeneic vs. autologous stem-cell transplants in neutropenic patients (2012) (9)
- Methodological arguments for the necessity of randomized trials in high-dose chemotherapy for breast cancer (1999) (9)
- Quantification and interpretation of attributable mortality in core clinical infectious disease journals. (2020) (9)
- An application of propensity score methods to estimate the treatment effect of corticosteroids in patients with severe cutaneous adverse reactions (2010) (9)
- Nonparametric hypothesis testing (2012) (9)
- [Nosocomial infections in Germany. Microbiological diagnosis, preventive antibiotics and antibiotic therapy]. (1996) (8)
- A note on nonparametric quantile inference for competing risks and more complex multistate models (2008) (8)
- The Kaplan-Meier Integral in the Presence of Covariates: A Review (2017) (8)
- A multi-state model based reanalysis of the Framingham Heart Study: Is dementia incidence really declining? (2019) (8)
- The population‐attributable fraction for time‐dependent exposures and competing risks—A discussion on estimands (2019) (8)
- Meta‐analysis for aggregated survival data with competing risks: a parametric approach using cumulative incidence functions (2016) (8)
- An empirical comparison of three methods for multiple cutoff diagnostic test meta‐analysis of the Patient Health Questionnaire‐9 (PHQ‐9) depression screening tool using published data vs individual level data (2020) (8)
- Analyzing the impact of duration of ventilation, hospitalization, and ventilation episodes on the risk of pneumonia (2019) (8)
- Netboost: Boosting-Supported Network Analysis Improves High-Dimensional Omics Prediction in Acute Myeloid Leukemia and Huntington’s Disease (2019) (7)
- A note on estimating local recurrence rates in clinical trials on the treatment of breast cancer (1998) (7)
- minPtest: a resampling based gene region-level testing procedure for genetic case-control studies (2014) (7)
- The effect of oral contraceptive use on the prognosis of node positive breast cancer patients. German Breast Cancer Study Group. (1998) (7)
- Sequential Analysis of Survival Times in Clinical Trials (1986) (6)
- Analysis of survival by tumor response: have we learnt any better? (2015) (6)
- Simulating and analysing infectious disease data in a heterogeneous population with migration (2011) (6)
- Investigator initiated trials versus industry sponsored trials - translation of randomized controlled trials into clinical practice (IMPACT) (2021) (6)
- 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 (2010) (6)
- Soluble Urokinase Receptor and Chronic Kidney Disease. (2016) (6)
- Regularized Regression Incorporating Network Information: Simultaneous Estimation of Covariate Coefficients and Connection Signs (2014) (6)
- Procalcitonin as a diagnostic marker for sepsis. (2013) (6)
- Are large trials less reliable than small trials? (2009) (6)
- Estimating hazard ratios in cohort data with missing disease information due to death (2017) (5)
- Cohort studies were found to be frequently biased by missing disease information due to death. (2019) (5)
- RE: "COMPARISON OF STATISTICAL APPROACHES FOR DEALING WITH IMMORTAL TIME BIAS IN DRUG EFFECTIVENESS STUDIES". (2016) (5)
- Estimating the Effect of a Prognostic or Risk Factor after Selection of an " Optimal " Cutpoint (2001) (5)
- Assessing Noninferiority in Treatment Trials for Severe Infectious Diseases: an Extension to the Entire Follow-Up Period Using a Cure-Death Multistate Model (2017) (5)
- Treatment of hospital-acquired pneumonia. (2011) (5)
- Correction: Neuraminidase Inhibitors and Hospital Mortality in British Patients with H1N1 Influenza A: A Re-Analysis of Observational Data (2016) (5)
- Intention-to-Treat Analyse (2002) (5)
- A case‐cohort approach for multi‐state models in hospital epidemiology (2017) (5)
- Paediatric hospital-acquired bacteraemia in developing countries (2012) (5)
- Evaluation of nonproportional treatment effects in cancer clinical trials. (1990) (5)
- The population‐attributable fraction for time‐dependent exposures using dynamic prediction and landmarking (2019) (4)
- Identifying Prognostic SNPs in Clinical Cohorts: Complementing Univariate Analyses by Resampling and Multivariable Modeling (2016) (4)
- The case-crossover design via penalized regression (2016) (4)
- German Clinical Trials Register (2017) (4)
- Diagnostic tools and prognostic factors in human breast cancer evaluated by morphological and immunohistochemical methods (1992) (4)
- Bias due to censoring of deaths when calculating extra length of stay for patients acquiring a hospital infection (2018) (4)
- Improving nested case-control studies to conduct a full competing-risks analysis for nosocomial infections (2018) (4)
- Multistate modelling of competing risks (2012) (4)
- Randomized study comparing carboplatin/cyclophosphamide and cisplatin/cyclophosphamide as first-line treatment in patients with stage III/IV epithelial ovarian cancer and small volume disease. German Ovarian Cancer Study Group (GOCA). (1997) (4)
- Therapy of early breast cancer: preliminary results of the German Breast Cancer Study. (1989) (4)
- Modelling two cause‐specific hazards of competing risks in one cumulative proportional odds model? (2017) (4)
- Importance and Determinants of Comorbidities, Functional Limitations and Multiple Myeloma (MM)-Specific Risk Factors: Further Development of an Improved and Weighted MM-Risk Score (Freiburg Comorbidity Index [FCI]) (2014) (4)
- Assessment of the "case-chaos" design as an adjunct to the case-control design. (2014) (4)
- Rank-based p-values for sparse high-dimensional risk prediction models fitted by componentwise boosting (2009) (4)
- Clinical epidemiology and individualized medicine (2011) (4)
- On the use of hazard functions in breast cancer studies. (1982) (4)
- Polymorphisms in DNA repair genes modify lymphoma risk (2011) (4)
- Relapse- and immunosuppression-free survival after hematopoietic stem-cell transplantation: How can we assess treatment success for complex time-to-event endpoints? (2020) (4)
- 7th drug hypersensitivity meeting: part one (2016) (4)
- Letter to the editor. (2009) (4)
- The time‐dependent “cure‐death” model investigating two equally important endpoints simultaneously in trials treating high‐risk patients with resistant pathogens (2017) (4)
- Dose-intensified epirubicin versus standard-dose epirubicin/cyclophosphamide followed by CMF in breast cancer patients with 10 or more positive lymph nodes: results of a randomised trial (GABG-IV E-93) - the German Adjuvant Breast Cancer Group. (2010) (4)
- [Initial results of the Project of the German Breast Cancer Study Group on "Breast saving therapy of the small breast cancer"]. (1992) (4)
- [The German Clinical Trials Register: reasons, general and technical aspects, international integration]. (2009) (4)
- Cross-Over Studien (2002) (4)
- Determination of the Population Size in an Epidemiological Study with Children (2004) (4)
- Can matching improve the performance of boosting for identifying important genes in observational studies? (2013) (3)
- Re: "Incidence of dementia among participants and nonparticipants in a longitudinal study of cognitive aging". (2015) (3)
- Dealing with prognostic signature instability: a strategy illustrated for cardiovascular events in patients with end-stage renal disease (2016) (3)
- Effect of radiotherapy in addition to 6 cycles CMF in node positive breast cancer patients (1998) (3)
- Methods for Evaluating Medical Tests and Biomarkers (2017) (3)
- [Prolongation of hospital stay by nosocomial pneumonia and wound infection]. (1991) (3)
- [Problems of statistical evaluation of survival time studies]. (2008) (3)
- Methodological challenges in using point-prevalence versus cohort data in risk factor analyses of nosocomial infections. (2018) (3)
- Statistical Analysis of the Ames Assay (1991) (3)
- On the misuses of arti"cial neural networks for prognostic and diagnostic classi"cation in oncology (2000) (3)
- Monoclonal Antibodies for Improved Evaluation of Breast Cancer Prognosis (1988) (3)
- Aspekte der statistischen Evaluation neuer Prognosefaktoren: Illustration bei Studien in der Onkologie (1999) (3)
- Grading system for breast cancer. (1998) (3)
- Bootstrap and Cross-Validation to Assess Complexity of Data-Driven Regression Models (2000) (3)
- Doug Altman: Driving critical appraisal and improvements in the quality of methodological and medical research (2020) (3)
- Analyzing the impact of depth of response on survival in patients with metastatic non-small-cell lung cancer. (2018) (3)
- The Impact of Early Adequate Treatment on Extubation and Discharge Alive of Patients With Pseudomonas aeruginosa-Related Ventilator-Associated Pneumonia* (2018) (3)
- Network-Constrained Covariate Coefficient and Connection Sign Estimation (2018) (2)
- Statistical and methodological concerns about the beneficial effect of neuraminidase inhibitors on mortality. (2014) (2)
- Dose escalation of gemcitabine concomitant with radiation and cisplatin for nonsmall cell lung cancer (2010) (2)
- Randomized trial on the effect of radiotherapy in addition to 6 cycles CMF in node-positive breast-cancer patients (2001) (2)
- High-Dose Chemotherapy as Adjuvant Treatment for Breast Cancer – Some Statistical Arguments (1996) (2)
- Sole reliance on I2 may mislead (2017) (2)
- Time-dependent covariates and multistate models (2012) (2)
- Regression modelling in hospital epidemiology: a statistical note (2008) (2)
- [Postoperative wound infections in surgery--prevalence in Germany (Nosocomial Infections in Germany--Assessment and Prevention Study)]. (1996) (2)
- Updated survival results from the Zebra trial. (2002) (2)
- A note on statistical association and causality derived from epidemiological ICU data (2010) (2)
- Nested exposure case-control sampling: a sampling scheme to analyze rare time-dependent exposures (2018) (2)
- 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 (2016) (2)
- Sampling designs for rare time-dependent exposures: a comparison of the nested exposure case-control design and exposure density sampling (2021) (2)
- Impact of investigator initiated trials and industry sponsored trials on medical practice (IMPACT): rationale and study design (2020) (2)
- Nonparametric inference for the cumulative incidence function of a competing risk, with an emphasis on confidence bands in the presence of left‐truncation (2012) (2)
- [Clinical trials registers. Introduction to the topic and backgrounds]. (2009) (2)
- Probability estimation and machine learning—Editorial (2014) (2)
- A simulation approach for power calculation in large cohort studies based on multistate models (2018) (2)
- S18.3: Contributions of artificial neural networks to knowledge in clinical medicine ‐ is there evidence of improvement? (2004) (2)
- Adverse event development in clinical oncology trials. (2016) (2)
- 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". (2017) (2)
- Multidisciplinary tumor boards and their analyses: the yin and yang of outcome measures (2021) (2)
- THE IMPORTANCE OF BASIC STATISTICAL PRINCIPLES FOR THE INTERPRETATION OF EPIDEMIOLOGICAL DATA (1997) (2)
- Which patients to sample in clinical cohort studies when the number of events is high and measurement of additional markers is constrained by limited resources (2020) (2)
- The German Breast Preservation Trial. Concept and first results related to the structural relationship of various prognostic factors (1990) (2)
- Duration of adjuvant chemotherapy for breast cancer: A joint analysis of two randomized trials investigating 3 versus 6 courses of CMF (cyclophosphamide, methotrexate and 5-fluorouracil) (2002) (1)
- A boosting approach for adapting the sparsity of risk prediction signatures based on different molecular levels (2014) (1)
- Multistate models and their connection to competing risks (2012) (1)
- A multi-state model analysis of the time from ethical approval to publication of clinical research studies (2020) (1)
- Comments on ‘Performance of using multiple stepwise algorithms for variable selection’ by Ryan E. Wiegand, Statistics in Medicine 2010; 29:1647–1659 (2011) (1)
- 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 (2018) (1)
- A flexible multivariate random effects proportional odds model with application to adverse effects during radiation therapy (2016) (1)
- Comparison of Marginal Structural Models to a missing data approach illustrated by data on breast cancer chemotherapies (2010) (1)
- RE: "RISK-SET MATCHING TO ASSESS THE IMPACT OF HOSPITAL-ACQUIRED BLOODSTREAM INFECTIONS". (2019) (1)
- [Hospital infections in gynecology and obstetrics. An inclusive prevalence study in Germany]. (1996) (1)
- Aggressive versus conservative initiation of antibiotics. (2013) (1)
- Proportional hazards models (2012) (1)
- Therapy of small breast cancer — comparision between mastectomy and breast preserving therapy (1991) (1)
- O-12 Radiation therapy after breast-conserving surgery: randomised trial in patients with low risk of recurrence (2007) (1)
- Multidisciplinary tumor boards and their analyses: the yin and yang of outcome measures (2021) (1)
- Effects of immunomodulating therapies on mortality in patients with severe cutaneous adverse reactions in comparison with supportive care only: a systematic review (2014) (1)
- Quantifying and communicating the burden of COVID-19 (2021) (1)
- [Design, goals and preliminary results of the first national breast cancer study--the Federal Ministry of Research and Technology study of "small breast cancer"]. (1988) (1)
- “Classification of Therapy Resistance Based on Longitudinal Biomarker Profiles” by M. Kohlmann, L. Held and V. P. Grunert Biometrical Journal (2009) 51(4):610–626 Article: http://dx.doi.org/10.1002/bimj.200800157. Authors' reply: http://dx.doi.org/10.1002/bimj.201000119 (2010) (0)
- Statistics in Clinical Cancer Research Competing Risks and Multistate Models (2012) (0)
- Basic Statistical Principles for the Evaluation of Risk Factors (1994) (0)
- Proportional transition hazards models (2012) (0)
- SELDI-TOF-Based Proteomic Analysis of Plasma Samples as a Diagnostic Tool to Predict Acute Graft-Versus-Host Disease after Allogeneic Stem Cell Transplantation (2008) (0)
- Analysing Outbreak Data in a Heterogeneous Population with Migration (2009) (0)
- Additional insights on the modelling of the COVID-19 clinical progression using multi-state methodology (2021) (0)
- A multivariable approach for risk markers from pooled molecular data with only partial overlap (2019) (0)
- Sparseness determination for boosting estimation of high-dimensional survival models (2008) (0)
- [Saving the breast versus mastectomy in the small breast cancer. Results of the GBSG (German Breast Cancer Study Group)]. (1993) (0)
- TheKaplan-Meier Integral in the Presenceof Covariates:AReview (2019) (0)
- Individual Patient Data Of Conditional Survival Analysis In a Large Cohort Of 816 Multiple Myeloma (MM) Patients Constitutes a Different Way To Identify Patients With Extended Life Expectancy (2013) (0)
- Norman Edward Breslow–Key figure in the foundation of modern biostatistics (2017) (0)
- Methods to estimate the distribution of the additional stay in hospital due to nosocomial infections (1991) (0)
- Sample Size Calculations for Clinical Trials (2013) (0)
- Comparison of complex modeling strategies for prediction of a binary outcome based on a few, highly correlated predictors (2020) (0)
- Further topics in competing risks (2012) (0)
- 2 TheKaplan-Meier Integral in thePresenceof Covariates : AReview (2017) (0)
- Integrating multiple molecular sources into a clinical risk prediction signature by extracting complementary information (2016) (0)
- Practice of Epidemiology Assessment of the “Case-Chaos”Design as anAdjunct to theCase-Control Design (2014) (0)
- In Vivo Methylome Changes in Purified Peripheral Blood Blasts and T Cells of AML Patients Treated with Decitabine: Statistical Modelling of a Hypomethylation Response (2014) (0)
- Dealing with prognostic signature instability: a strategy illustrated for cardiovascular events in patients with end-stage renal disease (2016) (0)
- O-3 Long-term results from the ZEBRA trial comparing Goserelin with CMF as adjuvant therapy in premenopausal women (2007) (0)
- NONPARAMETRIC ESTIMATION OF PREGNANCY OUTCOME PROBABILITIES 1 (2017) (0)
- Prospective assessment of a comorbidity and functional geriatric assessment (CF-GA), including the revised Freiburg Comorbidity Index (rFCI) in MM patients (pts) (2015) (0)
- [Therapy of the small breast carcinoma--generalized conversion to breast-saving treatment in Germany. 8 years results]. (1997) (0)
- P1-541 Reporting of eligibility criteria of randomised trials: empirical study comparing trial protocols to subsequent articles (2011) (0)
- Prognostic impact of HER-2/neu gene copy number determination by fluorescence in situ hybridisation (FISH) versus immunohistochemically detected overexpression in node positive primary breast cancer (1998) (0)
- Impact of Comorbidities and Prospective Functional Geriatric Assessment Tools (CF-GA) As an Aide to Understand Outcome, Therapy Tolerance, Side Effects and Clinical Trial Eligibility in Multiple Myeloma (MM) Patients (pts) (2015) (0)
- Comparison of 3 versus 6 cycles CMF in node positive breast cancer patients based on 10 years follow-up (1998) (0)
- Re: Meta-analysis comparing cisplatin total dose intensity and survival: a critical reappraisal. (1996) (0)
- Changes in Rates of Ventilator-Associated Pneumonia. (2017) (0)
- Updated survival analyses from the ZEBRA study: goserelin vs CMF in premenopausal women with node-positive breast cancer (2003) (0)
- CONNECTION SIGN ESTIMATION (2020) (0)
- Further topics in multistate modelling (2012) (0)
- The population-attributable fraction for time-to-event data. (2022) (0)
- Initially fewer bloodstream infections for allogeneic versus autologous stem-cell transplants in neutropenic patients – ERRATUM (2013) (0)
- 50 Statistical arguments for the necessity of randomized trials in high-dose chemotherapy for breast cancer (1997) (0)
- Risk factors disrupting mucosal integrity and subsequent vancomycin‐resistant enterococcus infection (2010) (0)
- Nested exposure case-control sampling: a sampling scheme to analyze rare time-dependent exposures (2018) (0)
- Impact of Investigator Initiated Trials and Industry Sponsored Trials on Medical Practice (Impact): Results of a Cohort Study (2020) (0)
- Multicenter Randomized Phase III Study Evaluating the Role of High-Dose Chemotherapy and Peripheral Blood Progenitor Cell Support in Patients with Limited-Stage Small-Cell Lung Cancer (1998) (0)
- Determinants of prognosis after first isolated locoregional recurrence of breast cancer (1998) (0)
- Survival time models for analysing drug combination treatments. (1990) (0)
- Evaluation of the Risk of Relapse and Survival Using a Conditional Survival Approach in 815 Multiple Myeloma Patients (2016) (0)
- S41.2: Selection of the link function for survival regression models with the Brier score (2004) (0)
- An informal introduction to hazard-based analyses (2012) (0)
- Can matching improve the performance of boosting for identifying important genes in observational studies? (2012) (0)
- Control procedures and estimators of the false discovery rate and their application in low-dimensional settings: an empirical investigation (2018) (0)
- Erratum to: Methods for evaluating medical tests and biomarkers (2017) (0)
- Correction of Survival Bias in a Study About Increased Mortality of Heads of Government (2019) (0)
- Statistical aspects in the analysis of a breast cancer clinical trial (1991) (0)
- P713 Risk factor analysis of blood stream infection and pneumonia in neutropenic patients after peripheral blood stem-cell transplantation (2007) (0)
- Discussion of “A risk‐based measure of time‐varying prognostic discrimination for survival models,” by C. Jason Liang and Patrick J. Heagerty (2017) (0)
- Letter to the editor regarding the paper “New weighting methods when cases are only a subset of events in a nested case‐control study” by Qian M. Zhou, Xuan Wang, Yingye Zheng, and Tianxi Cai (2023) (0)
- A shared frailty model for multivariate longitudinal data on adverse event of radiation therapy (2021) (0)
- Functional Geriatric Assessment (F-GA) in Multiple Myeloma Patients: Results from a Prospective Multicenter Study Group (DSMM) Trial and Changes from Baseline to Follow-up Assessment (2016) (0)
- Conditional survival analysis of Multiple Myeloma patients: experience of the Comprehensive Cancer Center Freiburg (CCCF) University Medical Center Freiburg (2015) (0)
- The German Breast Cancer Study I: Preliminary Results of Breast-Conserving Treatment Dependent on Radiation Technique (1989) (0)
- A Case-Cohort Approach for Extended Illness-Death Models in Hospital Epidemiology (2015) (0)
- A randomized clinical trial evaluating the duration of chemotherapy in patients with primary, node-positive breast cancer (1993) (0)
- Conditional Survival Analysis in a Large Cohort of Multiple Myeloma Patients Provides Detailed Information about Long-Term Survival and Constitutes a Different Way to Identify Patients with Extended Life Expectancy (2012) (0)
- Practice of Epidemiology Incidence Densities in a Competing Events Analysis (2010) (0)
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What Schools Are Affiliated With Martin Schumacher?
Martin Schumacher is affiliated with the following schools:
