Richard J. Ryan

885 total citations
24 papers, 470 citations indexed

About

Richard J. Ryan is a scholar working on General Health Professions, Pediatrics, Perinatology and Child Health and Epidemiology. According to data from OpenAlex, Richard J. Ryan has authored 24 papers receiving a total of 470 indexed citations (citations by other indexed papers that have themselves been cited), including 7 papers in General Health Professions, 6 papers in Pediatrics, Perinatology and Child Health and 6 papers in Epidemiology. Recurrent topics in Richard J. Ryan's work include Acute Myocardial Infarction Research (4 papers), Healthcare cost, quality, practices (3 papers) and Emergency and Acute Care Studies (3 papers). Richard J. Ryan is often cited by papers focused on Acute Myocardial Infarction Research (4 papers), Healthcare cost, quality, practices (3 papers) and Emergency and Acute Care Studies (3 papers). Richard J. Ryan collaborates with scholars based in United States, Australia and United Kingdom. Richard J. Ryan's co-authors include Christopher J. Lindsell, Steven De Decker, Rodrigo Gutierrez‐Quintana, Gail ter Haar, Michael S. Lyons, Kimberly W. Hart, Rachel M. Ancona, Cyrus K. Yamin, Andrew H. Ruffner and Erin L. Winstanley and has published in prestigious journals such as Journal of Clinical Oncology, Ecological Applications and Annals of Emergency Medicine.

In The Last Decade

Richard J. Ryan

22 papers receiving 446 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Richard J. Ryan United States 12 135 111 107 92 89 24 470
Srikrishna V Malayala United States 15 61 0.5× 50 0.5× 143 1.3× 43 0.5× 39 0.4× 37 925
Ross E. Zumwalt United States 17 269 2.0× 147 1.3× 81 0.8× 8 0.1× 62 0.7× 44 884
J Handel United States 8 72 0.5× 79 0.7× 64 0.6× 24 0.3× 100 1.1× 13 554
Ibrahim Aliyu Nigeria 13 29 0.2× 101 0.9× 90 0.8× 57 0.6× 166 1.9× 128 629
D. Vidyasagar United States 18 67 0.5× 66 0.6× 141 1.3× 12 0.1× 130 1.5× 73 907
Christopher Sampson United States 14 131 1.0× 62 0.6× 82 0.8× 5 0.1× 33 0.4× 42 451
Jane Baumblatt United States 10 212 1.6× 116 1.0× 227 2.1× 6 0.1× 160 1.8× 15 746
James S. Barry United States 19 103 0.8× 107 1.0× 133 1.2× 9 0.1× 53 0.6× 37 1.1k
David Jerrard United States 13 127 0.9× 148 1.3× 102 1.0× 7 0.1× 53 0.6× 36 606
Tam Eaton New Zealand 10 44 0.3× 30 0.3× 150 1.4× 17 0.2× 173 1.9× 12 1.3k

Countries citing papers authored by Richard J. Ryan

Since Specialization
Citations

This map shows the geographic impact of Richard J. Ryan'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 Richard J. Ryan with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Richard J. Ryan more than expected).

Fields of papers citing papers by Richard J. Ryan

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Richard J. Ryan. 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 Richard J. Ryan. The network helps show where Richard J. Ryan may publish in the future.

Co-authorship network of co-authors of Richard J. Ryan

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

All Works

20 of 20 papers shown
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Loughlin, Elaine, Richard J. Ryan, Aoife Leahy, et al.. (2021). Audit of inpatient acute stroke services in a university teaching hospital, 2020. Irish Journal of Medical Science (1971 -). 191(2). 895–899. 1 indexed citations
3.
Gillam, Marianne, Elizabeth E. Roughead, Rosanna Tavella, et al.. (2021). Impact of COVID‐19 restrictions on pathology service utilisation. Internal Medicine Journal. 52(1). 42–48. 1 indexed citations
4.
Ryan, Richard J., et al.. (2020). Evaluation of low-intensity initiatives to improve linkage to care for emergency department patients with opioid use disorder. The American Journal of Emergency Medicine. 38(11). 2391–2394. 2 indexed citations
5.
Lane, Bennett H., Michael S. Lyons, Uwe Stolz, et al.. (2020). Naloxone provision to emergency department patients recognized as high-risk for opioid use disorder. The American Journal of Emergency Medicine. 40. 173–176. 10 indexed citations
6.
Ryan, Richard J., et al.. (2018). Evaluation of the influence of kyphosis and scoliosis on intervertebral disc extrusion in French bulldogs. BMC Veterinary Research. 14(1). 5–5. 23 indexed citations
7.
Coyne, Christopher J., Rebecca Shatsky, Danielle D. Durham, et al.. (2018). Cancer pain in the emergency department: A multicenter study of the Comprehensive Oncologic Emergencies Research Network.. Journal of Clinical Oncology. 36(15_suppl). 6541–6541. 1 indexed citations
8.
Ryan, Richard J., Rodrigo Gutierrez‐Quintana, Gail ter Haar, & Steven De Decker. (2017). Prevalence of thoracic vertebral malformations in French bulldogs, Pugs and English bulldogs with and without associated neurological deficits. The Veterinary Journal. 221. 25–29. 86 indexed citations
9.
Ancona, Rachel M., Gillian A. Beauchamp, Cyrus K. Yamin, et al.. (2016). Emergency Department Prescription Opioids as an Initial Exposure Preceding Addiction. Annals of Emergency Medicine. 68(2). 202–208. 138 indexed citations
10.
Fertel, Baruch S., Kimberly W. Hart, Christopher J. Lindsell, Richard J. Ryan, & Michael S. Lyons. (2015). Patients Who Use Multiple EDs: Quantifying the Degree of Overlap between ED Populations. Western Journal of Emergency Medicine. 16(2). 229–233. 14 indexed citations
11.
Fertel, Baruch S., Kimberly W. Hart, Christopher J. Lindsell, Richard J. Ryan, & Michael S. Lyons. (2012). Toward Understanding the Difference Between Using Patients or Encounters in the Accounting of Emergency Department Utilization. Annals of Emergency Medicine. 60(6). 693–698. 13 indexed citations
12.
Hart, Kimberly W., Christopher J. Lindsell, & Richard J. Ryan. (2012). A Time-and-Motion Study of the Processes Required to Obtain Cardiac Biomarker Assays Using Central Laboratory, Near-Patient Testing, and Bedside Point-of-Care Testing. Point of Care The Journal of Near-Patient Testing & Technology. 11(2). 61–68. 3 indexed citations
13.
Esposito, Emily, Judd E. Hollander, Richard J. Ryan, et al.. (2011). Predictors of 30-day Cardiovascular Events in Patients With Prior Percutaneous Coronary Intervention or Coronary Artery Bypass Grafting. Academic Emergency Medicine. 18(6). 613–618. 2 indexed citations
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Ryan, Richard J., et al.. (2008). Fluoroquinolone resistance during 2000–2005 : An observational study. BMC Infectious Diseases. 8(1). 71–71. 11 indexed citations
17.
Blas, Magaly M., Isaac E. Alva, Robinson Cabello, et al.. (2007). Internet as a tool to access high-risk men who have sex with men from a resource-constrained setting: a study from Peru. Sexually Transmitted Infections. 83(7). 567–570. 29 indexed citations
18.
Rebarber, Richard, et al.. (2007). ROBUST POPULATION MANAGEMENT UNDER UNCERTAINTY FOR STRUCTURED POPULATION MODELS. Ecological Applications. 17(8). 2175–2183. 16 indexed citations
19.
Han, Jin H., Christopher J. Lindsell, Richard J. Ryan, & W. Brian Gibler. (2005). Changes in cardiac troponin T measurements are associated with adverse cardiac events in patients with chronic kidney disease. The American Journal of Emergency Medicine. 23(4). 468–473. 14 indexed citations
20.
Ryan, Richard J., et al.. (2004). A 23‐hour care centre model for the management of surgical patients. ANZ Journal of Surgery. 74(9). 754–759. 16 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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