James M. O’Brien

6.0k total citations · 1 hit paper
94 papers, 3.9k citations indexed

About

James M. O’Brien is a scholar working on Economics and Econometrics, Epidemiology and Finance. According to data from OpenAlex, James M. O’Brien has authored 94 papers receiving a total of 3.9k indexed citations (citations by other indexed papers that have themselves been cited), including 26 papers in Economics and Econometrics, 24 papers in Epidemiology and 22 papers in Finance. Recurrent topics in James M. O’Brien's work include Sepsis Diagnosis and Treatment (19 papers), Credit Risk and Financial Regulations (14 papers) and Respiratory Support and Mechanisms (12 papers). James M. O’Brien is often cited by papers focused on Sepsis Diagnosis and Treatment (19 papers), Credit Risk and Financial Regulations (14 papers) and Respiratory Support and Mechanisms (12 papers). James M. O’Brien collaborates with scholars based in United States, Denmark and Canada. James M. O’Brien's co-authors include Nora’aini Ali, Jeremy Berkowitz, Clay B. Marsh, Stanley Lemeshow, Gary Phillips, Scott K. Aberegg, Alfred F. Connors, Edward Abraham, Stephen Hoffmann and Allan Garland and has published in prestigious journals such as Science, New England Journal of Medicine and The Journal of Finance.

In The Last Decade

James M. O’Brien

89 papers receiving 3.7k 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.

Acquired Weakness, Handgrip Strength, and Mortality in Critically Ill Patients

2008 524 citations Nora’aini Ali, James M. O’Brien et al. American Journal of Respiratory and Critical Care Medicine profile →

Peers

James M. O’Brien

PRM

EPIDE

CCICM

FINAN

Guillermo García-García Mexico

Paul E. Stevens United Kingdom

Daniel E. Weiner United States

John Knight United States

James S. Kaufman United States

Valérie A. Luyckx United States

Dónal O’Donoghue United Kingdom

Manish M. Sood Canada

Paul Komenda Canada

Dongjie Fan United States

Guillermo García-García Mexico

James M. O’Brien

585 ×0.6

PRM

537 ×0.6

EPIDE

124 ×0.2

CCICM

326 ×0.5

FINAN

353 ×0.7

Citations per year, relative to James M. O’Brien James M. O’Brien (= 1×) peers Guillermo García-García

Countries citing papers authored by James M. O’Brien

Since Specialization

Citations

This map shows the geographic impact of James M. O’Brien'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 James M. O’Brien with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites James M. O’Brien more than expected).

Fields of papers citing papers by James M. O’Brien

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by James M. O’Brien. 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 James M. O’Brien. The network helps show where James M. O’Brien may publish in the future.

Co-authorship network of co-authors of James M. O’Brien

This figure shows the co-authorship network connecting the top 25 collaborators of James M. O’Brien. A scholar is included among the top collaborators of James M. O’Brien 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 James M. O’Brien. James M. O’Brien is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Bailitz, John, Ravi Agarwala, Madeline Jankowski, et al.. (2025). Artificial Intelligence–Guided Lung Ultrasound by Nonexperts. JAMA Cardiology. 10(3). 245–245. 9 indexed citations

Gottlieb, Michael, et al.. (2024). Prevalence of undiagnosed stage B heart failure among emergency department patients. The American Journal of Emergency Medicine. 85. 153–157. 2 indexed citations

Shabbir, Muhammad Asim, et al.. (2019). Wellen’s syndrome or traumatic jaw pain?. BMJ Case Reports. 12(10). e232504–e232504. 2 indexed citations

O’Brien, James M., et al.. (2018). Are gestational and type II diabetes mellitus associated with the Apgar scores of full-term neonates?. International Journal of Women s Health. Volume 10. 603–607. 6 indexed citations

O’Brien, James M., Janet M. Corrigan, Lisa K. Moores, et al.. (2012). Will Performance Measurement Lead to Better Patient Outcomes?. CHEST Journal. 141(2). 300–307. 9 indexed citations

Ali, Nora’aini, Karen Wolf, Jeffrey Hammersley, et al.. (2011). Continuity of Care in Intensive Care Units: A Cluster-Randomized Trial of Intensivist Staffing. American Journal of Respiratory and Critical Care Medicine. 184(7). 803–808. 81 indexed citations

O’Brien, James M., Bo Lü, Nora’aini Ali, et al.. (2011). Insurance type and sepsis-associated hospitalizations and sepsis-associated mortality among US adults: A retrospective cohort study. Critical Care. 15(3). R130–R130. 36 indexed citations

Fowler, Robert, J. Daryl Thornton, Ruxandra Pinto, et al.. (2010). An Official American Thoracic Society Systematic Review: The Association between Health Insurance Status and Access, Care Delivery, and Outcomes for Patients Who Are Critically Ill. American Journal of Respiratory and Critical Care Medicine. 181(9). 1003–1011. 67 indexed citations

Aberegg, Scott K., Derek Richards, & James M. O’Brien. (2010). Delta inflation: a bias in the design of randomized controlled trials in critical care medicine. Critical Care. 14(2). R77–R77. 72 indexed citations

10.

Aberegg, Scott K. & James M. O’Brien. (2009). The normalization heuristic: An untested hypothesis that may misguide medical decisions. Medical Hypotheses. 72(6). 745–748. 10 indexed citations

11.

Ali, Nora’aini, James M. O’Brien, Kathleen Dungan, et al.. (2008). Glucose variability and mortality in patients with sepsis*. Critical Care Medicine. 36(8). 2316–2321. 333 indexed citations

12.

Ali, Nora’aini, James M. O’Brien, Stephen Hoffmann, et al.. (2008). Acquired Weakness, Handgrip Strength, and Mortality in Critically Ill Patients. American Journal of Respiratory and Critical Care Medicine. 178(3). 261–268. 524 indexed citations breakdown →

13.

Baran, Christopher P., Judy M. Opalek, Christie A. Newland, et al.. (2007). Important Roles for Macrophage Colony-stimulating Factor, CC Chemokine Ligand 2, and Mononuclear Phagocytes in the Pathogenesis of Pulmonary Fibrosis. American Journal of Respiratory and Critical Care Medicine. 176(1). 78–89. 153 indexed citations

14.

Parsons, Jonathan P., James M. O’Brien, Maria Lucarelli, & John G. Mastronarde. (2006). Differences in the Evaluation and Management of Exercise-Induced Bronchospasm between Family Physicians and Pulmonologists. Journal of Asthma. 43(5). 379–384. 19 indexed citations

15.

O’Brien, James M., Nora’aini Ali, & Edward Abraham. (2005). Year in review in Critical Care, 2004: sepsis and multi-organ failure. Critical Care. 9(4). 409–13. 19 indexed citations

16.

O’Brien, James M. & Edward Abraham. (2003). New approaches to the treatment of sepsis. Clinics in Chest Medicine. 24(4). 521–548. 20 indexed citations

17.

Kupiec, Paul & James M. O’Brien. (1995). The Use of Bank Trading Risk Models for Regulatory Capital Purposes. SSRN Electronic Journal. 2 indexed citations

18.

O’Brien, James M., et al.. (1994). Thrift Stock Returns and Balance Sheet Interest Rate Sensitivity. SSRN Electronic Journal.

19.

O’Brien, James M., Athanasios Orphanides, & David H. Small. (1994). Estimating the Interest Rate Sensitivity of Liquid Retail Deposit Values. SSRN Electronic Journal. 13 indexed citations

20.

Liang, J. Nellie & James M. O’Brien. (1991). Equity underwriting risk. SSRN Electronic Journal.

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.

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