Mohammad Ehsanul Karim

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All published works

Action	Title	Year	Authors
+	Evaluating the Role of High‐Dimensional Proxy Data in Confounding Adjustment in Multiple Sclerosis Research: A Case Study	2025	Mohammad Ehsanul Karim Md. Belal Hossain Huah Shin Ng Feng Zhu Hanna A. Frank Helen Tremlett
+	Towards Robust Causal Inference in Epidemiological Research: Employing Double Cross-fit TMLE in Right Heart Catheterization Data	2024	Momenul Haque Mondol Mohammad Ehsanul Karim
+	The Misclassification of Depression and Anxiety Disorders in the Multiple Sclerosis Prodrome: A Probabilistic Bias Analysis	2024	Fardowsa Yusuf Mohammad Ehsanul Karim Paul Gustafson Jason M. Sutherland Feng Zhu Yinshan Zhao Ruth Ann Marrie Helen Tremlett
+	Benefits of Repeated Matched-Cohort and Nested Case–Control Analyses with Time-dependent Exposure in Observational Studies	2024	Md. Belal Hossain Hubert Wong Mohsen Sadatsafavi James C. Johnston Victoria Cook Mohammad Ehsanul Karim
+	Can supervised deep learning architecture outperform autoencoders in building propensity score models for matching?	2024	Mohammad Ehsanul Karim
+ PDF Chat	High-Dimensional Propensity Score and Its Machine Learning Extensions in Residual Confounding Control	2024	Mohammad Ehsanul Karim
+	Bayesian Adaptive Enrichment Design in Multi-Arm Clinical Trials: The Bayesaet Package for R Users	2024	Denghuang Zhan Yongdong Ouyang Fidel Vila‐Rodriguez Mohammad Ehsanul Karim Hubert Wong
+ PDF Chat	Properties of inverse probability of adherence weighted estimator of the per-protocol effect for sustained treatment strategies under different data-generating mechanisms and adherence patterns	2023	Lucy Mosquera Mohammad Ehsanul Karim Md. Belal Hossain
+ PDF Chat	Implementing TMLE in the presence of a continuous outcome	2023	Hanna A. Frank Mohammad Ehsanul Karim
+	Comparative Analysis of Instrumental Variables on the Assignment of Buprenorphine/Naloxone or Methadone for the Treatment of Opioid Use Disorder	2023	Fahmida Homayra Benjamin Enns Jeong Eun Min Megan Kurz Paxton Bach Julie Bruneau Sander Greenland Paul Gustafson Mohammad Ehsanul Karim P. Todd Korthuis
+	Key considerations for choosing a statistical method to deal with incomplete treatment adherence in pragmatic trials	2022	Md. Belal Hossain Mohammad Ehsanul Karim
+ PDF Chat	Considerations for choosing an imputation method for addressing sparse measurement issues dictated by the study design - An illustration from per-protocol analysis in pragmatic trials	2022	Mohammad Ehsanul Karim Md. Belal Hossain
+ PDF Chat	A Prospective Observational Cohort Comparison of SARS-CoV-2 Seroprevalence Between Paramedics and Matched Blood Donors in Canada During the COVID-19 Pandemic	2022	Brian Grunau Sheila F. O’Brien Tracy Kirkham Jennie Helmer Paul A. Demers Michael Asamoah-Boaheng Steven J. Drews Mohammad Ehsanul Karim Jocelyn A. Srigley Sadaf Sediqi
+ PDF Chat	Recommendations for the use of propensity score methods in multiple sclerosis research	2022	Gabrielle Simoneau Fabio Pellegrini Thomas P. A. Debray Julie Rouette Johanna Muñoz Robert W. Platt John Petkau Justin Bohn Changyu Shen Carl de Moor
+ PDF Chat	Analysis approaches to address treatment nonadherence in pragmatic trials with point-treatment settings: a simulation study	2022	Md. Belal Hossain Lucy Mosquera Mohammad Ehsanul Karim
+ PDF Chat	Performance of statistical methods to address treatment non-adherence in pragmatic clinical trials with point-treatment settings: a simulation study	2021	Md. Belal Hossain Lucy Mosquera Mohammad Ehsanul Karim
+	CRTpowerdist: An R package to calculate attained power and construct the power distribution for cross-sectional stepped-wedge and parallel cluster randomized trials	2021	Yongdong Ouyang Liang Xu Mohammad Ehsanul Karim Paul Gustafson Hubert Wong
+ PDF Chat	Incorporating partial adherence into the principal stratification analysis framework	2021	Eric Sanders Paul Gustafson Mohammad Ehsanul Karim
+	Using external data to incorporate unmeasured confounders: A plasmode simulation study comparing alternative approaches to impute body mass index in a study of the relationship between osteoarthritis and cardiovascular disease	2021	Mohammad Atiquzzaman Mohammad Ehsanul Karim Jacek A. Kopec Hubert Wong Mary A. De Vera Aslam H. Anis
+ PDF Chat	The use and quality of reporting of propensity score methods in multiple sclerosis literature: A review	2020	Mohammad Ehsanul Karim Fabio Pellegrini Robert W. Platt Gabrielle Simoneau Julie Rouette Carl de Moor
+	Dealing With Treatment-Confounder Feedback and Sparse Follow-up in Longitudinal Studies: Application of a Marginal Structural Model in a Multiple Sclerosis Cohort	2020	Mohammad Ehsanul Karim Helen Tremlett Feng Zhu John Petkau Elaine Kingwell
+ PDF Chat	Explaining the variation in the attained power of a stepped-wedge trial with unequal cluster sizes	2020	Yongdong Ouyang Mohammad Ehsanul Karim Paul Gustafson Thalia S. Field Hubert Wong
+ PDF Chat	Explaining the variation in the attained power of a stepped-wedge trial with unequal cluster sizes	2020	Yongdong Ouyang Mohammad Ehsanul Karim Paul Gustafson Thalia S. Field Hubert Wong
+ PDF Chat	Explaining the variation in the attained power of a stepped-wedge trial with unequal cluster sizes	2020	Yongdong Ouyang Mohammad Ehsanul Karim Paul Gustafson Thalia S. Field Hubert Wong
+	Study of a family of asymmetric densities and flexible quantile regression	2019	Mohammad Ehsanul Karim
+ PDF Chat	The randomization-induced risk of a trial failing to attain its target power: assessment and mitigation	2019	Hubert Wong Yongdong Ouyang Mohammad Ehsanul Karim
+	When exposure is subject to nondifferential misclassification, are validation data helpful in testing for an exposure–disease association?	2019	Paul Gustafson Mohammad Ehsanul Karim
+ PDF Chat	Authors' reply: Letter to the Editor: Comparison of statistical approaches dealing with time-dependent confounding in drug effectiveness studies (SMMR, Vol 27, Issue 6, 2018)	2018	Mohammad Ehsanul Karim John Petkau Paul Gustafson Robert W. Platt
+	The Effect of Serious Offending on Health: A Marginal Structural Model	2018	Valerio Baćak Mohammad Ehsanul Karim
+ PDF Chat	Estimating the effect of referral for nephrology care on the survival of adults with advanced chronic kidney disease in a real-world clinical setting	2018	Ping Liu Mohammad Ehsanul Karim Paul E. Ronksley Brenda R. Hemmelgarn Hude Quan Robert R. Quinn Pietro Ravani
+ PDF Chat	Can We Train Machine Learning Methods to Outperform the High-dimensional Propensity Score Algorithm?	2017	Mohammad Ehsanul Karim Menglan Pang Robert W. Platt
+ PDF Chat	Estimating inverse probability weights using super learner when weight-model specification is unknown in a marginal structural Cox model context	2017	Mohammad Ehsanul Karim Robert W. Platt
+ PDF Chat	On the application of statistical learning approaches to construct inverse probability weights in marginal structural Cox models: Hedging against weight-model misspecification	2016	Mohammad Ehsanul Karim John Petkau Paul Gustafson Helen Tremlett The Beams Study Group
+ PDF Chat	Comparison of statistical approaches dealing with time-dependent confounding in drug effectiveness studies	2016	Mohammad Ehsanul Karim John Petkau Paul Gustafson Robert W. Platt Helen Tremlett
+ PDF Chat	Comparison of Statistical Approaches for Dealing With Immortal Time Bias in Drug Effectiveness Studies	2016	Mohammad Ehsanul Karim Paul Gustafson John Petkau Helen Tremlett
+	Hypothesis Testing for an Exposure–Disease Association in Case–Control Studies Under Nondifferential Exposure Misclassification in the Presence of Validation Data: Bayesian and Frequentist Adjustments	2016	Mohammad Ehsanul Karim Paul Gustafson
+	Causal inference approaches for dealing with time-dependent confounding in longitudinal studies, with applications to multiple sclerosis research	2015	Mohammad Ehsanul Karim
+	Directed Acyclic Graphs to Identify Confounders	2015	Aranka Anema Mohammad Ehsanul Karim M‐J Milloy Evan Wood Lawrence C. McCandless
+	Can joint replacement reduce cardiovascular risk?	2013	Mohammad Ehsanul Karim

Common Coauthors

Coauthor	Papers Together
Paul Gustafson	13
Hubert Wong	8
Md. Belal Hossain	7
Robert W. Platt	7
Helen Tremlett	6
Yongdong Ouyang	6
John Petkau	6
Lucy Mosquera	3
Feng Zhu	3
Thalia S. Field	3
Carl de Moor	2
Evan Wood	2
Julie Rouette	2
Lawrence C. McCandless	2
Fabio Pellegrini	2
Hanna A Frank	2
Gabrielle Simoneau	2
Aslam H. Anis	1
Huah Shin Ng	1
Ian R. Drennan	1
P. Todd Korthuis	1
Momenul Haque Mondol	1
Johanna Muñoz	1
Jacek A. Kopec	1
M. Eugenia Socías	1
Elaine Kingwell	1
Jennie Helmer	1
Paul E. Ronksley	1
Menglan Pang	1
Fidel Vila‐Rodriguez	1
Steven J. Drews	1
Tracy Kirkham	1
Robert R. Quinn	1
Denghuang Zhan	1
Changyu Shen	1
Benjamin Enns	1
Bohdan Nosyk	1
Justin Bohn	1
Eric Sanders	1
James C. Johnston	1
Sheila F. O’Brien	1
Kevin Schnepel	1
Victoria Cook	1
Paul A. Demers	1
M‐J Milloy	1
Brian Grunau	1
Megan Kurz	1
Brenda R. Hemmelgarn	1
Ruth Ann Marrie	1
Fahmida Homayra	1

Commonly Cited References

Action	Title	Year	Authors	# of times referenced
+	Constructing Inverse Probability Weights for Marginal Structural Models	2008	Stephen R. Cole Miguel A. Hernán	10
+	Marginal Structural Models and Causal Inference in Epidemiology	2000	James M. Robins Miguel A. Hernán Babette Brumback	9
+	Marginal Structural Models to Estimate the Causal Effect of Zidovudine on the Survival of HIV-Positive Men	2000	Miguel A. Hernán Babette Brumback James M. Robins	7
+ PDF Chat	The central role of the propensity score in observational studies for causal effects	1983	Paul R. Rosenbaum Donald B. Rubin	7
+ PDF Chat	Accuracy of Conventional and Marginal Structural Cox Model Estimators: A Simulation Study	2010	Yongling Xiao Michał Abrahamowicz Erica E. M. Moodie	7
+	Relation between three classes of structural models for the effect of a time-varying exposure on survival	2009	Jessica G. Young Miguel A. Hernán Sally Picciotto James M. Robins	6
+ PDF Chat	Interval-cohort designs and bias in the estimation of per-protocol effects: a simulation study	2019	Jessica G. Young Rajet Vatsa Eleanor J. Murray Miguel A. Hernán	6
+ PDF Chat	Principles of confounder selection	2019	Tyler J. VanderWeele	6
+	Design and analysis of stepped wedge cluster randomized trials	2006	Michael A. Hussey James P. Hughes	5
+	Estimating causal effects from epidemiological data	2006	Miguel A. Hernán	5
+	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 Kjetil Røysland Marcel Wolbers Vanessa Didelez Jonathan A C Sterne Bruno Ledergerber Hansjakob Furrer Viktor von Wyl Odd O. Aalen	5
+ PDF Chat	Improving Propensity Score Estimators' Robustness to Model Misspecification Using Super Learner	2014	Romain Pirracchio Maya Petersen Mark van der Laan	5
+ PDF Chat	Comparison of Statistical Approaches for Dealing With Immortal Time Bias in Drug Effectiveness Studies	2016	Mohammad Ehsanul Karim Paul Gustafson John Petkau Helen Tremlett	5
+	Survival Bias Associated with Time-to-Treatment Initiation in Drug Effectiveness Evaluation: A Comparison of Methods	2005	Zheng Zhou Elham Rahme Michał Abrahamowicz Louise Pilote	5
+ PDF Chat	Comparison of Approaches to Weight Truncation for Marginal Structural Cox Models	2013	Yongling Xiao Erica E. M. Moodie Michał Abrahamowicz	4
+	Regularized Regression Versus the High-Dimensional Propensity Score for Confounding Adjustment in Secondary Database Analyses	2015	Jessica M. Franklin Wesley Eddings Robert J. Glynn Sebastian Schneeweiß	4
+ PDF Chat	A simulation study of finite‐sample properties of marginal structural Cox proportional hazards models	2012	Daniel Westreich Stephen R. Cole Enrique F. Schisterman Robert W. Platt	4
+	Performance of the marginal structural models under various scenarios of incomplete marker's values: A simulation study	2014	Georgia Vourli Giota Touloumi	4
+ PDF Chat	Using simulation studies to evaluate statistical methods	2019	Tim P. Morris Ian R. White Michael J. Crowther	4
+	Power calculation for cross‐sectional stepped wedge cluster randomized trials with variable cluster sizes	2019	Linda J. Harrison Tom Chen Rui Wang	4
+	Adjusting for adherence in randomized trials when adherence is measured as a continuous variable: An application to the Lipid Research Clinics Coronary Primary Prevention Trial	2020	Kerollos Nashat Wanis Arin L. Madenci Miguel A. Hernán Eleanor J. Murray	4
+ PDF Chat	Can We Train Machine Learning Methods to Outperform the High-dimensional Propensity Score Algorithm?	2017	Mohammad Ehsanul Karim Menglan Pang Robert W. Platt	4
+	Per-Protocol Analyses of Pragmatic Trials	2017	Miguel A. Hernán James M. Robins	4
+ PDF Chat	The randomization-induced risk of a trial failing to attain its target power: assessment and mitigation	2019	Hubert Wong Yongdong Ouyang Mohammad Ehsanul Karim	4
+ PDF Chat	Comparison of statistical approaches dealing with time-dependent confounding in drug effectiveness studies	2016	Mohammad Ehsanul Karim John Petkau Paul Gustafson Robert W. Platt Helen Tremlett	4
+ PDF Chat	A marginal structural model for multiple-outcome survival data:assessing the impact of injection drug use on several causes of death in the Canadian Co-infection Cohort	2013	Erica E. M. Moodie David A. Stephens Marina B. Klein	4
+ PDF Chat	Estimating inverse probability weights using super learner when weight-model specification is unknown in a marginal structural Cox model context	2017	Mohammad Ehsanul Karim Robert W. Platt	4
+ PDF Chat	Recommendations for choosing an analysis method that controls Type I error for unbalanced cluster sample designs with Gaussian outcomes	2015	Jacqueline L. Johnson Sarah M. Kreidler Diane Catellier David M. Murray Keith E. Muller Deborah H. Glueck	4
+	Problem of immortal time bias in cohort studies: example using statins for preventing progression of diabetes	2010	Linda E. Lévesque J. A Hanley Abbas Kezouh Samy Suissa	4
+	Relation of pooled logistic regression to time dependent cox regression analysis: The framingham heart study	1990	Ralph B. D’Agostino Mei‐Ling Ting Lee Albert J. Belanger L. Adrienne Cupples Keaven M. Anderson William B. Kannel	4
+ PDF Chat	The impact of varying cluster size in cross-sectional stepped-wedge cluster randomised trials	2019	James Martín Karla Hemming Alan Girling	4
+	Impact of mis‐specification of the treatment model on estimates from a marginal structural model	2008	Geneviève Lefebvre Joseph A. Delaney Robert W. Platt	4
+	Comparison of algorithms to generate event times conditional on time‐dependent covariates	2007	Marie‐Pierre Sylvestre Michał Abrahamowicz	4
+	Sensitivity analyses for unmeasured confounding assuming a marginal structural model for repeated measures	2004	Babette Brumback Miguel A. Hernán Sebastien Haneuse James M. Robins	4
+ PDF Chat	Beyond the intention-to-treat in comparative effectiveness research	2011	Miguel A. Hernán Sonia Hernández–Dı́az	4
+ PDF Chat	Improving propensity score weighting using machine learning	2009	Brian K. Lee Justin Lessler Elizabeth A. Stuart	4
+ PDF Chat	Sample size calculation for a stepped wedge trial	2015	Gianluca Baio Andrew Copas Gareth Ambler James Hargreaves Emma Beard Rumana Z. Omar	4
+ PDF Chat	Ensemble learning of inverse probability weights for marginal structural modeling in large observational datasets	2014	Susan Gruber Roger Logan Inmaculada Jarrín Susana Monge Miguel A. Hernán	4
+ PDF Chat	Variable Selection for Propensity Score Models	2006	M. Alan Brookhart Sebastian Schneeweiß Kenneth J. Rothman Robert J. Glynn Jerry Avorn Til Stürmer‎	4
+	Marginal Structural Models to Estimate the Joint Causal Effect of Nonrandomized Treatments	2001	Miguel A. Hernán Babette Brumback James M. Robins	4
+	High‐dimensional propensity score algorithm in comparative effectiveness research with time‐varying interventions	2014	Romain Neugebauer Julie A. Schmittdiel Zheng Zhu Jeremy A. Rassen John D. Seeger Sebastian Schneeweiß	4
+ PDF Chat	Simulation from a known Cox MSM using standard parametric models for the g-formula	2013	Jessica G. Young Eric J. Tchetgen Tchetgen	4
+ PDF Chat	Observational data for comparative effectiveness research: An emulation of randomised trials of statins and primary prevention of coronary heart disease	2011	Goodarz Danaei Luis A. Garcı́a Rodrı́guez Oscar Fernández Cantero Roger Logan Miguel A. Hernán	3
+ PDF Chat	Mortality Risk Score Prediction in an Elderly Population Using Machine Learning	2013	Sherri Rose	3
+	On computing standard errors for marginal structural Cox models	2013	Ali Raza Muktar Ali Zhe Wei	3
+ PDF Chat	On model selection and model misspecification in causal inference	2010	Stijn Vansteelandt Maarten Bekaert Gerda Claeskens	3
+	The Robust Inference for the Cox Proportional Hazards Model	1989	D. Y. Lin L. J. Wei	3
+	Propensity Score Estimation With Boosted Regression for Evaluating Causal Effects in Observational Studies.	2004	Daniel F. McCaffrey Greg Ridgeway Andrew R. Morral	3
+ PDF Chat	Simulating from marginal structural models with time‐dependent confounding	2012	W.G. Havercroft Vanessa Didelez	3
+	Survivor treatment bias, treatment selection bias, and propensity scores in observational research	2010	Peter C. Austin Robert W. Platt	3