Joshua Wallach
Assistant Professor
Assistant Professor
Faculty, Epidemiology
Dr. Joshua Wallach is an Assistant Professor within the Department of Epidemiology at the Rollins School of Public Health. Dr. Wallach's research leverages a wide range of methodologies and data sources to evaluate the role of evidence in policy decision-making and the development, regulation, and utilization of medical products. His methodological expertise encompasses evidence synthesis and evaluation, including conducting systematic reviews, meta-analyses, next-generation reviews, and meta-research studies. He is a core faculty member of the Collaboration for Regulatory Rigor, Integrity, and Transparency (CRRIT) and the Yale Open Data Access (YODA) Project. Dr. Wallach serves as an Associate Editor for the Journal of the American College of Cardiology.
Research Areas and Example Projects:
- Evaluating the quality of the evidence base for pharmaceutical and medical device regulation
- Identifying subgroups of patients most likely to benefit from alcohol use disorder medications (NIAAA/NIH)
- Postmarket evaluation methods and policy, including the data sources and methods that can help monitor the postmarket safety of medical products and the evidence supporting coverage and fair payment of medical products
- Understanding the use of existing real-world data for medical product evaluation (Yale-Mayo CERSI / FDA)
- Conventional systematic reviews, meta-analyses, ‘next-generation’ reviews (e.g., individual patient-level meta-analyses and umbrella reviews), and meta-research studies
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Identifying, selecting, and utilizing quantitative bias analysis methods (Yale-Mayo CERSI / RSPH / FDA)
Opportunities for students:
If you are interested in any of the topics outlined above, please email joshua.wallach@emory.edu for additional information. Example projects with students have focused on publication practices (JAMA Network Open); evidence synthesis (BMJ Medicine, JAMA Network Open), data sharing (Clinical Trials), the US Food and Drug Administration (Clinical Trials), clinical trial methodology (JAMA Internal Medicine), conflicts of interest (Annals of Internal Medicine), epidemiological methods (International Journal of Epidemiology), and COVID-19 evidence (BMJ)
Expertise:
- Systematic reviews and meta-analyses
- Meta-research (research on research)
- Regulatory science (US Food and Drug Administration)
- Health policy
- Epidemiologic methods / biases
- Real-world data for medical product evaluation
Areas of Interest
- Addiction/Substance Abuse
- Clinical Trials
- Health Policy
- Health Services Research
- Public Health Policy
Education
- PhD 2017, Stanford University
- MS 2017, Stanford University
Publications
- Joshua D Wallach, Samuel Yoon, Harry Doernberg, Laura R Glick, Oriana Ciani, Rod S Taylor, Maryam Mooghali, Reshma Ramachandran, Joseph S Ross, 2024, Associations between surrogate markers and clinical outcomes for nononcologic chronic disease treatments, JAMA, 331, 1646-1654
- Xiaoting Shi, Ziang Liu, Mingfeng Zhang, Wei Hua, Jie Li, Joo-Yeon Lee, Sai Dharmarajan, Kate Nyhan, Ashley Naimi, Timothy L Lash, Molly M Jeffery, Joseph S Ross, Zeyan Liew, Joshua D Wallach, 2024, Quantitative bias analysis methods for summary level epidemiologic data in the peer-reviewed literature: a systematic review, Journal of Clinical Epidemiology, 175,
- Osman Moneer, Garrison Daly, Joshua J Skydel, Kate Nyhan, Peter Lurie, Joseph S Ross, Joshua D Wallach, 2022, Agreement of treatment effects from observational studies and randomized controlled trials evaluating hydroxychloroquine, lopinavir-ritonavir, or dexamethasone for covid-19: meta-epidemiological study, BMJ, 377:e069400,
- Xiaoting Shi, Haoran Zhuo, Yuxuan Du, Kate Nyhan, John Ioannidis, Joshua D Wallach , 2022, Environmental risk factors for non-Hodgkin's lymphoma: umbrella review and comparison of meta-analyses of summary and individual participant data, BMJ Medicine, 1,
- Marissa H Elliott, Joshua J Skydel, Sanket S Dhruva, Joseph S Ross, Joshua D Wallach, 2021, Characteristics and reporting of number needed to treat, number needed to harm, and absolute risk reduction in controlled clinical trials, 2001-2019, JAMA Internal Medicine, 181, 282-284
- Joshua D Wallach, Audrey D Zhang, Joshua J Skydel, Victoria L Bartlett, Sanket S Dhruva, Nilay D Shah, Joseph S Ross, 2021, Feasibility of Using Real-world Data to Emulate Postapproval Confirmatory Clinical Trials of Therapeutic Agents Granted US Food and Drug Administration Accelerated Approval, JAMA Network Open, ,
- Joshua D Wallach, Yihong Deng, Rozalina G McCoy, Sanket S Dhruva, Jeph Herrin, Alyssa Berkowitz, Eric C Polley, Kenneth Quinto, Charu Gandotra, William Crown, Peter Noseworthy, Xiaoxi Yao, Nilay D Shah, Joseph S Ross, Timothy D Lyon, 2021, Real-world cardiovascular outcomes associated with degarelix vs leuprolide for prostate cancer treatment, JAMA Network Open, 4, e2130587
- Lingzhi Chu, John PA Ioannidis, Alex C Egilman, Vasilis Vasiliou, Joseph S Ross, Joshua D Wallach , 2020, Vibration of effects in epidemiologic studies of alcohol consumption and breast cancer risk, International Journal of Epidemiology, 49,
- Joshua D Wallach, Kun Wang, Audrey D Zhang, Deanna Cheng, Holly K Grossetta Nardini, Haiqun Lin, Michael B Bracken, Mayur Desai, Harlan M Krumholz, Joseph S Ross, 2020, Updating insights into rosiglitazone and cardiovascular risk through shared data: individual patient and summary level meta-analyses, BMJ, 368,
- Joshua D Wallach, Joseph S Ross, 2018, Gabapentin approvals, off-label use, and lessons for postmarketing evaluation efforts, JAMA, 319, 776-778
- Joshua D Wallach, Alexander C Egilman, Sanket S Dhruva, Margaret E McCarthy, Jennifer E Miller, Steven Woloshin, Lisa M Schwartz, Joseph S Ross, 2018, Postmarket studies required by the US Food and Drug Administration for new drugs and biologics approved between 2009 and 2012: cross sectional analysis, BMJ, 361,
- David Chavalarias, Joshua David Wallach, Alvin Ho Ting Li, John PA Ioannidis, 2016, Evolution of reporting P values in the biomedical literature, 1990-2015, JAMA, 315, 1141-1148
- Joshua D Wallach, Patrick G Sullivan, John F Trepanowski, Ewout W Steyerberg, John PA Ioannidis, 1945, Sex based subgroup differences in randomized controlled trials: empirical evidence from Cochrane meta-analyses, BMJ, 355,