Comparison of Statistical Approaches for Dealing With Immortal Time Bias in Drug Effectiveness Studies

Beta-interferon exposure and onset of secondary progressive multiple sclerosis

(2015) T. Zhang et al.   EUROPEAN JOURNAL OF NEUROLOGY

Prediction of individual combined benefit and harm for patients with atrial fibrillation considering warfarin therapy: a study protocol

(2015) Guowei Li et al.   BMJ Open

Multiple Sclerosis in Older Adults: The Clinical Profile and Impact of Interferon Beta Treatment

(2015) Afsaneh Shirani et al.   Biomed Research International

Marginal Structural Cox Models for Estimating the Association Between β-Interferon Exposure and Disease Progression in a Multiple Sclerosis Cohort

(2014) Mohammad Ehsanul Karim et al.   AMERICAN JOURNAL OF EPIDEMIOLOGY

Hormone replacement therapy and mid-term implant survival following knee or hip arthroplasty for osteoarthritis: a population-based cohort study

(2014) D Prieto-Alhambra et al.   ANNALS OF THE RHEUMATIC DISEASES

Long-term outcome in patients with ST segment elevation myocardial infarction and multivessel disease treated with culprit-only, immediate, or staged multivessel percutaneous revascularization strategies: Insights from the REAL registry

(2014) Antonio Manari et al.   CATHETERIZATION AND CARDIOVASCULAR INTERVENTIONS

Investigation of heterogeneity in the association between interferon beta and disability progression in multiple sclerosis: an observational study

(2013) A. Shirani et al.   EUROPEAN JOURNAL OF NEUROLOGY

Comparison of methods for estimating the effect of salvage therapy in prostate cancer when treatment is given by indication

(2013) Jeremy M. G. Taylor et al.   STATISTICS IN MEDICINE

The relation between total joint arthroplasty and risk for serious cardiovascular events in patients with moderate-severe osteoarthritis: propensity score matched landmark analysis

(2013) B. Ravi et al.   BMJ-British Medical Journal

Can joint replacement reduce cardiovascular risk?

(2013) M. E. Karim   BMJ-British Medical Journal

Association Between Use of Interferon Beta and Progression of Disability in Patients With Relapsing-Remitting Multiple Sclerosis

(2012) Afsaneh Shirani et al.   JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION

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

(2012) Martin Wolkewitz et al.   JOURNAL OF CLINICAL EPIDEMIOLOGY

Armitage lecture 2010: Understanding treatment effects: the value of integrating longitudinal data and survival analysis

(2012) Odd O. Aalen   STATISTICS IN MEDICINE

Simulation of survivorship bias in observational studies on plasma to red blood cell ratios in massive transfusion for trauma

(2011) A. M.-H. Ho et al.   BRITISH JOURNAL OF SURGERY

Utilization patterns and patient outcomes associated with use of rescue therapies in acute lung injury*

(2011) Allan J. Walkey et al.   CRITICAL CARE MEDICINE

Issues regarding ‘immortal time’ in the analysis of the treatment effects in observational studies

(2011) Jiannong Liu et al.   KIDNEY INTERNATIONAL

Analyzing direct and indirect effects of treatment using dynamic path analysis applied to data from the Swiss HIV Cohort Study

(2011) Kjetil Røysland et al.   STATISTICS IN MEDICINE

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

(2010) Martin Wolkewitz et al.   AMERICAN STATISTICIAN

Accuracy of Conventional and Marginal Structural Cox Model Estimators: A Simulation Study

(2010) Yongling Xiao et al.  

Survivor treatment bias, treatment selection bias, and propensity scores in observational research

(2010) Peter C. Austin et al.   JOURNAL OF CLINICAL EPIDEMIOLOGY

A sequential Cox approach for estimating the causal effect of treatment in the presence of time-dependent confounding applied to data from the Swiss HIV Cohort Study

(2010) Jon Michael Gran et al.   STATISTICS IN MEDICINE

Immortal time bias in critical care research: Application of time-varying Cox regression for observational cohort studies*

(2009) Ayumi K. Shintani et al.   CRITICAL CARE MEDICINE

Risk of Adverse Outcomes Associated With Concomitant Use of Clopidogrel and Proton Pump Inhibitors Following Acute Coronary Syndrome

(2009) P. Michael Ho   JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION

Estimating the Effect of a Time-Dependent Treatment by Levels of an Internal Time-Dependent Covariate: Application to the Contrast Between Liver Wait-List and Posttransplant Mortality

(2009) Douglas E. Schaubel et al.   JOURNAL OF THE AMERICAN STATISTICAL ASSOCIATION

Impact of multiple sclerosis relapses on progression diminishes with time

(2009) H. Tremlett et al.   NEUROLOGY

The Relationship of Blood Product Ratio to Mortality: Survival Benefit or Survival Bias?

(2009) Christopher W. Snyder et al.   JOURNAL OF TRAUMA-INJURY INFECTION AND CRITICAL CARE

Statins and Cancer Risk

(2008) Igor Karp et al.   AMERICAN JOURNAL OF MEDICINE

Immortal time bias in the study of effectiveness of interferon-β in multiple sclerosis

(2008) Christel Renoux et al.   ANNALS OF NEUROLOGY

Observational Studies Analyzed Like Randomized Experiments

(2008) Miguel A. Hernán et al.   EPIDEMIOLOGY

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

(2008) Jan Beyersmann et al.   JOURNAL OF CLINICAL EPIDEMIOLOGY

The impact of time-dependent bias in proportional hazards modelling

(2008) Jan Beyersmann et al.   STATISTICS IN MEDICINE

Immortal Time Bias in Pharmacoepidemiology

(2007) S. Suissa   AMERICAN JOURNAL OF EPIDEMIOLOGY

Comparison of algorithms to generate event times conditional on time-dependent covariates

(2007) Marie-Pierre Sylvestre et al.   STATISTICS IN MEDICINE