Samuel Leonard

693 total citations · 1 hit paper
15 papers, 316 citations indexed

About

Samuel Leonard is a scholar working on Infectious Diseases, General Health Professions and Clinical Psychology. According to data from OpenAlex, Samuel Leonard has authored 15 papers receiving a total of 316 indexed citations (citations by other indexed papers that have themselves been cited), including 6 papers in Infectious Diseases, 5 papers in General Health Professions and 5 papers in Clinical Psychology. Recurrent topics in Samuel Leonard's work include Posttraumatic Stress Disorder Research (4 papers), COVID-19 Clinical Research Studies (4 papers) and SARS-CoV-2 and COVID-19 Research (3 papers). Samuel Leonard is often cited by papers focused on Posttraumatic Stress Disorder Research (4 papers), COVID-19 Clinical Research Studies (4 papers) and SARS-CoV-2 and COVID-19 Research (3 papers). Samuel Leonard collaborates with scholars based in United States, Canada and Australia. Samuel Leonard's co-authors include Salomeh Keyhani, Anka A. Vujanovic, Dawn M. Bravata, Laura J. Myers, Charles Austin, Andrew Dysangco, Jennifer Myers, Ali Sexson, Alan J. Zillich and Ying Zhang and has published in prestigious journals such as JAMA, Nature Communications and Clinical Infectious Diseases.

In The Last Decade

Samuel Leonard

15 papers receiving 314 citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Association of Intensive Care Unit Patient Load and Demand With Mortality Rates in US Department of Veterans Affairs Hospitals During the COVID-19 Pandemic

2021 171 citations Dawn M. Bravata, Anthony J. Perkins et al. JAMA Network Open profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Samuel Leonard United States	6	117	70	65	57	47	15	316
Ankit Kumar Sahu India	9	129 1.1×	91 1.3×	65 1.0×	26 0.5×	58 1.2×	38	370
Ethel Sequeira‐Aymar Spain	10	114 1.0×	46 0.7×	18 0.3×	69 1.2×	44 0.9×	23	283
Matteo Bolcato Italy	11	105 0.9×	52 0.7×	23 0.4×	75 1.3×	56 1.2×	41	400
Juan Nicolás United States	7	88 0.8×	52 0.7×	70 1.1×	39 0.7×	80 1.7×	19	309
Anand Kartha Qatar	10	41 0.4×	80 1.1×	85 1.3×	130 2.3×	53 1.1×	25	426
Stella Safo United States	5	213 1.8×	42 0.6×	96 1.5×	54 0.9×	57 1.2×	8	373
Jake Gundrum United States	5	266 2.3×	50 0.7×	142 2.2×	45 0.8×	69 1.5×	8	457
Mirco Nacoti Italy	9	45 0.4×	47 0.7×	47 0.7×	51 0.9×	56 1.2×	24	438
Austin Porter United States	13	69 0.6×	42 0.6×	29 0.4×	44 0.8×	67 1.4×	47	375
Elizabeth A. Lancet United States	7	60 0.5×	60 0.9×	153 2.4×	51 0.9×	24 0.5×	12	382

Countries citing papers authored by Samuel Leonard

Since Specialization

Citations

This map shows the geographic impact of Samuel Leonard's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Samuel Leonard with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Samuel Leonard more than expected).

Fields of papers citing papers by Samuel Leonard

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Samuel Leonard. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Samuel Leonard. The network helps show where Samuel Leonard may publish in the future.

Co-authorship network of co-authors of Samuel Leonard

This figure shows the co-authorship network connecting the top 25 collaborators of Samuel Leonard. A scholar is included among the top collaborators of Samuel Leonard based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Samuel Leonard. Samuel Leonard is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

15 of 15 papers shown

1.

Kelly, J. Daniel, Katherine J. Hoggatt, Nathan C. Lo, et al.. (2025). Annual Variant-Targeted Vaccination to Prevent Severe COVID-19 in Cohorts With Vaccine-Derived and Hybrid Immunity. Clinical Infectious Diseases. 81(2). 222–230. 2 indexed citations

2.

Kelly, J. Daniel, Samuel Leonard, W. John Boscardin, et al.. (2023). Comparative mRNA booster effectiveness against death or hospitalization with COVID-19 pneumonia across at-risk US Veteran populations. Nature Communications. 14(1). 2976–2976. 4 indexed citations

3.

Zegel, Maya, et al.. (2023). COVID-19–Related Medical Vulnerability and Mental Health Outcomes Among US First Responders. Journal of Occupational and Environmental Medicine. 65(5). e283–e289. 2 indexed citations

4.

Leonard, Samuel, et al.. (2023). Alcohol Use Severity, Anger and Drinking Motives among Firefighters. Substance Use & Misuse. 58(5). 601–609. 3 indexed citations

5.

Zegel, Maya, et al.. (2023). Firefighter Relationship Satisfaction: Associations with Mental Health Outcomes. American Journal of Family Therapy. 52(4). 404–417. 1 indexed citations

6.

Rubin, Jessica B., Jennifer C. Lai, Samuel Leonard, et al.. (2022). Long-Term Opioid Use Among Veterans with Cirrhosis: High-Dose Prescriptions in an Exceedingly High-Risk Population. Journal of General Internal Medicine. 37(12). 3205–3207. 2 indexed citations

7.

Keyhani, Salomeh, Samuel Leonard, Amy L. Byers, et al.. (2022). Association of a Positive Drug Screening for Cannabis With Mortality and Hospital Visits Among Veterans Affairs Enrollees Prescribed Opioids. JAMA Network Open. 5(12). e2247201–e2247201. 2 indexed citations

8.

Leonard, Samuel, Katherine J. Hoggatt, W. John Boscardin, et al.. (2022). Incidence of Severe COVID-19 Illness Following Vaccination and Booster With BNT162b2, mRNA-1273, and Ad26.COV2.S Vaccines. JAMA. 328(14). 1427–1427. 40 indexed citations

9.

Vujanovic, Anka A., et al.. (2021). Exploring the impact of the COVID-19 pandemic on the mental health of first responders. Cognitive Behaviour Therapy. 50(4). 320–335. 46 indexed citations

10.

Leonard, Samuel, et al.. (2021). Associations between Lower-Order Anxiety Sensitivity Facets and PTSD Symptomatology among Trauma-Exposed Firefighters. Behavior Modification. 46(2). 294–320. 10 indexed citations

11.

Bravata, Dawn M., Anthony J. Perkins, Laura J. Myers, et al.. (2021). Association of Intensive Care Unit Patient Load and Demand With Mortality Rates in US Department of Veterans Affairs Hospitals During the COVID-19 Pandemic. Publisher. 1 indexed citations

12.

Bravata, Dawn M., Anthony J. Perkins, Laura J. Myers, et al.. (2021). Association of Intensive Care Unit Patient Load and Demand With Mortality Rates in US Department of Veterans Affairs Hospitals During the COVID-19 Pandemic. JAMA Network Open. 4(1). e2034266–e2034266. 171 indexed citations breakdown →

13.

Schmajuk, Gabriela, Samuel Leonard, Jing Li, et al.. (2021). Factors Associated With Hospitalization and Death After COVID‐19 Diagnosis Among Patients With Rheumatic Disease: An Analysis of Veterans Affairs Data. ACR Open Rheumatology. 3(11). 796–803. 4 indexed citations

14.

Kelly, J. Daniel, Dawn M. Bravata, Stephen Bent, et al.. (2021). Association of Social and Behavioral Risk Factors With Mortality Among US Veterans With COVID-19. JAMA Network Open. 4(6). e2113031–e2113031. 20 indexed citations

15.

Anderson, Timothy S., Samuel Leonard, Erin Madden, et al.. (2020). Trends in Low-Value Carotid Imaging in the Veterans Health Administration From 2007 to 2016. JAMA Network Open. 3(9). e2015250–e2015250. 8 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

Explore authors with similar magnitude of impact