John O’Brien

8.0k total citations · 4 hit papers
159 papers, 5.8k citations indexed

About

John O’Brien is a scholar working on Cardiology and Cardiovascular Medicine, Hematology and Surgery. According to data from OpenAlex, John O’Brien has authored 159 papers receiving a total of 5.8k indexed citations (citations by other indexed papers that have themselves been cited), including 35 papers in Cardiology and Cardiovascular Medicine, 25 papers in Hematology and 20 papers in Surgery. Recurrent topics in John O’Brien's work include Antiplatelet Therapy and Cardiovascular Diseases (32 papers), Platelet Disorders and Treatments (17 papers) and Venous Thromboembolism Diagnosis and Management (15 papers). John O’Brien is often cited by papers focused on Antiplatelet Therapy and Cardiovascular Diseases (32 papers), Platelet Disorders and Treatments (17 papers) and Venous Thromboembolism Diagnosis and Management (15 papers). John O’Brien collaborates with scholars based in United Kingdom, United States and Australia. John O’Brien's co-authors include P C Elwood, M.D. Etherington, P M Sweetnam, D Bainton, Ian Baker, J. W. G. Yarnell, P.J WHITEHEAD, Keith Dalziel, L. J. Witts and E.O. Field and has published in prestigious journals such as Nature, The Lancet and Circulation.

In The Last Decade

John O’Brien

149 papers receiving 5.1k 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.

Fibrinogen, viscosity, and white blood cell count are major risk factors for ischemic heart disease. The Caerphilly and Speedwell collaborative heart disease studies.

1991 770 citations John O’Brien et al. profile →
EFFECTS OF SALICYLATES ON HUMAN PLATELETS

1968 450 citations John O’Brien The Lancet profile →
Platelet aggregation

1962 307 citations John O’Brien Journal of Clinical Pathology profile →
Christmas Disease

1952 284 citations R Biggs, A. S. Douglas et al. BMJ profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
John O’Brien United Kingdom	38	1.5k	1.1k	899	685	567	159	5.8k
Suzanne K. Swan United States	34	453 0.3×	401 0.3×	572 0.6×	686 1.0×	466 0.8×	86	4.1k
Sylvia Heeneman Netherlands	45	1.7k 1.1×	512 0.4×	1.1k 1.2×	838 1.2×	138 0.2×	155	6.8k
Victor G. Vogel United States	49	486 0.3×	622 0.5×	1.9k 2.1×	871 1.3×	486 0.9×	173	16.1k
Alistair S. Hall United Kingdom	46	4.0k 2.7×	391 0.3×	511 0.6×	1.2k 1.7×	155 0.3×	184	8.8k
Lisa M. Schwartz United States	53	630 0.4×	233 0.2×	1.4k 1.6×	560 0.8×	228 0.4×	130	10.2k
Jan Lindemans Netherlands	55	722 0.5×	911 0.8×	967 1.1×	1.4k 2.0×	150 0.3×	217	9.9k
Armen Yuri Gasparyan United Kingdom	37	624 0.4×	489 0.4×	592 0.7×	584 0.9×	148 0.3×	113	5.5k
Richard A. Preston United States	33	1.1k 0.7×	153 0.1×	545 0.6×	400 0.6×	304 0.5×	188	4.1k
Myron A. Waclawiw United States	56	4.1k 2.7×	1.6k 1.4×	1.4k 1.5×	2.0k 3.0×	379 0.7×	139	14.9k
Charles L. Shapiro United States	60	871 0.6×	440 0.4×	2.2k 2.5×	803 1.2×	376 0.7×	233	13.1k

Countries citing papers authored by John O’Brien

Since Specialization

Citations

This map shows the geographic impact of John 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 John 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 John O’Brien more than expected).

Fields of papers citing papers by John O’Brien

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of John O’Brien

This figure shows the co-authorship network connecting the top 25 collaborators of John O’Brien. A scholar is included among the top collaborators of John 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 John O’Brien. John O’Brien 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:

20 of 20 papers shown

1.

Duffy, James, et al.. (2023). The regulation of threshold levels for prohibited substances in the world anti-doping program. The International Sports Law Journal. 23(2). 198–211.

2.

Fichman, Mark & John O’Brien. (2017). Three point shooting and efficient mixed strategies: A portfolio management approach. SHILAP Revista de lepidopterología. 4(2). 107–120. 5 indexed citations

3.

O’Brien, John. (2012). The unconquered people : the liberation journey of an oppressed caste. Oxford University Press eBooks. 5 indexed citations

4.

O’Brien, John. (2010). Taking Oneself Seriously: Autobiography, Comedy, and Occasional Writing in Kurt Vonnegut’s <i>Fates Worse than Death</i>. a/b Auto/Biography Studies. 25(1). 74–96.

5.

Wakefield, Douglas S., et al.. (2010). A network collaboration implementing technology to improve medication dispensing and administration in critical access hospitals. Journal of the American Medical Informatics Association. 17(5). 584–587. 19 indexed citations

6.

Barenfanger, Joan, et al.. (2005). Clinical impact of timely reporting of IgM for West Nile Virus. Journal of Clinical Virology. 34(2). 122–124. 2 indexed citations

7.

O’Brien, John, Han‐Mou Tsai, & M.D. Etherington. (2001). A comparison of von Willebrand Factor antigen with platelet activity in vitro in normal and venous occlusion blood. Platelets. 12(1). 27–33. 2 indexed citations

8.

O’Brien, John. (1995). Joint Utility Purchasing: A Case Study Lane Electric Cooperative. 36(1). 21. 3 indexed citations

9.

O’Brien, John. (1995). Platelet Activation at High and Low Shear is Followed by Inactivation: The Clinical Relevance. Platelets. 6(4). 242–243. 6 indexed citations

10.

Berg, Joyce E., Lane A. Daley, John Dickhaut, & John O’Brien. (1986). Controlling Preferences for Lotteries on Units of Experimental Exchange. The Quarterly Journal of Economics. 101(2). 281–281. 135 indexed citations

11.

O’Brien, John. (1974). Aspirin and Myocardial Infarction. BMJ. 2(5909). 52.2–52. 1 indexed citations

12.

O’Brien, John, et al.. (1969). A Nine-Year Survey of Fallopian Tube Dysfunction in Human Infertility. Fertility and Sterility. 20(6). 903–918. 28 indexed citations

13.

O’Brien, John. (1969). Platelet Aggregation Tests and Thrombosis. Journal of the Royal College of Physicians of London. 3(2). 193–200. 1 indexed citations

14.

O’Brien, John, et al.. (1969). Comparison of the effect of heparin and citrate on platelet aggregation. Journal of Clinical Pathology. 22(1). 28–31. 82 indexed citations

15.

O’Brien, John. (1968). EFFECT OF SALICYLATES ON HUMAN PLATELETS. The Lancet. 291(7557). 1431–1431. 21 indexed citations

16.

O’Brien, John. (1963). Further observations on platelet aggregation induced by adenosine diphosphate thrombin and tri-ethyl tin. Journal of Clinical Pathology. 16(3). 223–226. 16 indexed citations

17.

O’Brien, John. (1962). Platelet aggregation. Journal of Clinical Pathology. 15(5). 446–452. 307 indexed citations breakdown →

18.

O’Brien, John. (1954). Is Liver a “Tonic”?. BMJ. 2(4880). 136.2–137. 6 indexed citations

19.

Biggs, R, A. S. Douglas, Robert Macfarlane, et al.. (1952). Christmas Disease. BMJ. 2(4799). 1378–1382. 284 indexed citations breakdown →

20.

O’Brien, John. (1951). Argentaffinomata of Ileum Revealed by Secondary in Epididymis. BMJ. 2(4743). 1315–1316. 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.

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