Andrew Zullo

About

Andrew R. Zullo is an Associate Professor of Epidemiology and Health Services, Policy and Practice at Brown University. His research focuses on improving medication and vaccine use for older adults, with particular attention to optimizing outcomes such as physical and cognitive function. He conducts research in geriatric pharmacoepidemiology and health services research, specializing in studying the functional outcomes of medication use in institutional post-acute care and long-term care settings. Dr. Zullo applies pharmacoepidemiologic, comparative effectiveness and safety, and causal inference methodologies to large datasets, including administrative claims and electronic health records, to inform medication safety and effectiveness in older populations. His work also includes medication-related evidence synthesis projects, aiming to enhance understanding of medication utilization, safety, and outcomes among older adults, especially in nursing home and post-acute care contexts.

Research topics

• Medicine
• Immunology
• Political Science
• Computer Science
• Internal medicine
• Pediatrics
• Artificial Intelligence
• Environmental health
• Intensive care medicine
• Management science

Selected publications

• Framework for the synthesis of non-randomised studies and randomised controlled trials: a guidance on conducting a systematic review and meta-analysis for healthcare decision making

  BMJ evidence-based medicine · 2020 · 98 citations

  INTRODUCTION: High-quality randomised controlled trials (RCTs) provide the most reliable evidence on the comparative efficacy of new medicines. However, non-randomised studies (NRS) are increasingly recognised as a source of insights into the real-world performance of novel therapeutic products, particularly when traditional RCTs are impractical or lack generalisability. This means there is a growing need for synthesising evidence from RCTs and NRS in healthcare decision making, particularly giv…

  DOI

• Effectiveness of a Second COVID-19 Vaccine Booster Dose Against Infection, Hospitalization, or Death Among Nursing Home Residents — 19 States, March 29–July 25, 2022

  MMWR Morbidity and Mortality Weekly Report · 2022 · 56 citations

  Nursing home residents continue to experience significant COVID-19 morbidity and mortality (1). On March 29, 2022, the Advisory Committee on Immunization Practices (ACIP) recommended a second mRNA COVID-19 vaccine booster dose for adults aged ≥50 years and all immunocompromised persons who had received a first booster ≥4 months earlier.* On September 1, 2022, ACIP voted to recommend bivalent mRNA COVID-19 vaccine boosters for all persons aged ≥12 years who had completed the primary series using…

  DOI

• Medically Attended Illness due to Respiratory Syncytial Virus Infection Among Infants Born in the United States Between 2016 and 2020

  The Journal of Infectious Diseases · 2022 · 21 citations

  Senior authorCorresponding

  BACKGROUND: Respiratory syncytial virus (RSV) is a leading cause of infant hospitalization in the United States. Preterm infants and those with select comorbidities are at highest risk of RSV-related complications. However, morbidity due to RSV infection is not confined to high-risk infants. We estimated the burden of medically attended (MA) RSV-associated lower respiratory tract infection (LRTI) among infants in the United States. METHODS: We analyzed commercial (MarketScan Commercial [MSC], Op…

  PublisherOA PDFDOI

• Oral magnesium and outcomes in US veterans with heart failure

  European Heart Journal · 2025-10-14 · 3 citations

  articleOpen access

  BACKGROUND AND AIMS: Magnesium deficiency is associated with poor outcomes in patients with heart failure (HF), but less is known about the impact of oral magnesium therapy. This study aimed to examine the association of oral magnesium with outcomes in patients with HF and whether it depends on baseline serum magnesium. METHODS: Of 54 696 Veterans with HF (2001-2023) and hypomagnesemia (serum magnesium <1.7 mg/dL), 10 695 were initiated on oral magnesium (median dose, 420 mg/day). A propensity s…

  PublisherOA PDFDOI

• Identifying observable medication use time in administrative databases: a tutorial using nursing home residents

  American Journal of Epidemiology · 2025-10-09 · 2 citations

  articleOpen accessSenior author

  Nursing home (NH) residents are an important population for pharmacoepidemiologic research due to their prevalence of multimorbidity and polypharmacy. Medicare claims are commonly used to study medication use in this population, but medications dispensed during hospitalizations or post-acute care are unobservable due to bundled payment structures. We developed algorithms to identify NH days when medication dispensings can be observed in claims. Using a cohort of NH residents in the United States…

  PublisherDOI

Recent grants

• Clinically Significant Drug Interactions among Nursing Home Residents with ADRD

  NIH · $2.8M · 2022–2027

• Opioid use in post-acute hip fracture care: prescribing patterns, effectiveness, and safety

  NIH · $462k · 2019–2023

• Medications and the Risk of Motor Vehicle Crashes in Older Adults

  NIH · $2.1M · 2020–2025

Frequent coauthors

• Sarah D. Berry

  Hebrew SeniorLife

  289 shared

• Stefan Gravenstein

  Brown University

  245 shared

• Melissa R. Riester

  John Brown University

  238 shared

• Robertus van Aalst

  Brown University

  213 shared

• Vincent Mor

  Providence College

  186 shared

• Kevin W. McConeghy

  Brown University

  183 shared

• Lori A. Daiello

  Brown University

  177 shared

• Douglas P. Kiel

  Hebrew SeniorLife

  170 shared

Education

• Other, Pharmacy

  Brown University

• Ph.D.

  Brown University

Similar researchers at Brown University

• Kenneth Mayerh-156
• Eunyoung Choh-105
• Jennifer Friedmanh-102