Karen C. Johnston

8.0k total citations · 2 hit papers
82 papers, 4.9k citations indexed

About

Karen C. Johnston is a scholar working on Epidemiology, Pulmonary and Respiratory Medicine and Rehabilitation. According to data from OpenAlex, Karen C. Johnston has authored 82 papers receiving a total of 4.9k indexed citations (citations by other indexed papers that have themselves been cited), including 53 papers in Epidemiology, 35 papers in Pulmonary and Respiratory Medicine and 24 papers in Rehabilitation. Recurrent topics in Karen C. Johnston's work include Acute Ischemic Stroke Management (53 papers), Cerebrovascular and Carotid Artery Diseases (33 papers) and Stroke Rehabilitation and Recovery (23 papers). Karen C. Johnston is often cited by papers focused on Acute Ischemic Stroke Management (53 papers), Cerebrovascular and Carotid Artery Diseases (33 papers) and Stroke Rehabilitation and Recovery (23 papers). Karen C. Johnston collaborates with scholars based in United States, Canada and United Kingdom. Karen C. Johnston's co-authors include E. Clarke Haley, James F. Meschia, Douglas P. Wagner, Chelsea S. Kidwell, S. Claiborne Johnston, Edward C. Jauch, Christopher S. Coffey, Bruce Ovbiagele, Brian L. Hoh and Alexander A. Khalessi and has published in prestigious journals such as JAMA, SHILAP Revista de lepidopterología and Neurology.

In The Last Decade

Karen C. Johnston

76 papers receiving 4.7k 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.

2015 American Heart Association/American Stroke Association Focused Update of the 2013 Guidelines for the Early Management of Patients With Acute Ischemic Stroke Regarding Endovascular Treatment

2015 1.6k citations William J. Powers, Colin P. Derdeyn et al. Stroke profile →
Intensive vs Standard Treatment of Hyperglycemia and Functional Outcome in Patients With Acute Ischemic Stroke

2019 248 citations Karen C. Johnston, Askiel Bruno et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Karen C. Johnston United States	29	3.7k	1.6k	1.5k	1.4k	892	82	4.9k
Gregory del Zoppo United States	15	3.3k 0.9×	1.4k 0.8×	1.4k 1.0×	1.0k 0.7×	825 0.9×	19	4.9k
Atte Meretoja Finland	35	3.6k 1.0×	966 0.6×	2.0k 1.4×	1.5k 1.0×	1.0k 1.2×	92	5.1k
Kathleen Alwell United States	37	3.5k 1.0×	1.6k 1.0×	1.4k 1.0×	1.3k 0.9×	678 0.8×	99	5.4k
Andrew M. Southerland United States	22	3.5k 1.0×	1.5k 0.9×	1.7k 1.1×	1.1k 0.8×	1.2k 1.3×	80	4.9k
Enrique C. Leira United States	27	2.8k 0.8×	1.5k 0.9×	1.2k 0.8×	1.1k 0.7×	600 0.7×	108	5.1k
Debbie Summers United States	9	5.1k 1.4×	2.0k 1.2×	2.0k 1.4×	1.7k 1.2×	1.6k 1.8×	22	6.5k
Valeria Caso Italy	41	3.3k 0.9×	1.8k 1.1×	1.9k 1.3×	983 0.7×	967 1.1×	199	5.6k
Aristeidis H. Katsanos Greece	41	2.9k 0.8×	1.4k 0.8×	1.9k 1.3×	835 0.6×	955 1.1×	216	5.3k
Robert L. Grubb United States	19	2.9k 0.8×	1.6k 1.0×	2.1k 1.4×	773 0.5×	623 0.7×	39	5.0k
Paul W. McMullan United States	13	4.7k 1.3×	2.0k 1.2×	2.0k 1.3×	1.4k 1.0×	1.5k 1.7×	21	6.7k

Countries citing papers authored by Karen C. Johnston

Since Specialization

Citations

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

Fields of papers citing papers by Karen C. Johnston

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Karen C. Johnston. 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 Karen C. Johnston. The network helps show where Karen C. Johnston may publish in the future.

Co-authorship network of co-authors of Karen C. Johnston

This figure shows the co-authorship network connecting the top 25 collaborators of Karen C. Johnston. A scholar is included among the top collaborators of Karen C. Johnston 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 Karen C. Johnston. Karen C. Johnston 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

Wong, Ka‐Ho, Karen C. Johnston, Richa Sharma, et al.. (2024). Trends in American Indian/Alaskan native self-reported stroke prevalence and associated modifiable risk factors in the United States from 2011-2021. Journal of Stroke and Cerebrovascular Diseases. 33(6). 107650–107650. 1 indexed citations

Southerland, Andrew M., Stephan A. Mayer, Ashley C. Bolte, et al.. (2024). Glucose Control and Risk of Symptomatic Intracerebral Hemorrhage Following Thrombolysis for Acute Ischemic Stroke. Neurology. 102(9). e209323–e209323. 5 indexed citations

Lizárraga, Karlo J., Richard Benson, Gretchen L. Birbeck, et al.. (2024). Seven Strategies to Integrate Equity within Translational Research in Neurology. Annals of Neurology. 95(3). 432–441. 8 indexed citations

Havenon, Adam de, Mehdi Abbasi, Shadi Yaghi, et al.. (2023). Effect of Alteplase on Ischemic Stroke Mortality Is Dependent on Stroke Severity. Annals of Neurology. 93(6). 1106–1116. 5 indexed citations

Havenon, Adam de, Lily Zhou, Karen C. Johnston, et al.. (2023). Twenty-Year Disparity Trends in United States Stroke Death Rate by Age, Race/Ethnicity, Geography, and Socioeconomic Status. Neurology. 101(5). e464–e474. 13 indexed citations

Mallawaarachchi, Indika, Johanna Loomba, Sarah J. Ratcliffe, et al.. (2023). Increased stroke severity and mortality in patients with SARS-CoV-2 infection: An analysis from the N3C database. Journal of Stroke and Cerebrovascular Diseases. 32(3). 106987–106987. 5 indexed citations

Johnston, Karen C. & Edwin Trevathan. (2023). NINDS Health Equity Strategic Planning Process Overview, High-Level Recommendations, and Guide. Neurology. 101(7_Supplement_1). S1–S8. 6 indexed citations

Shu, Liqi, Wenyuan Zhang, Shadi Yaghi, et al.. (2023). Prestroke and Poststroke Sulfonylurea Exposure and Functional Outcomes: A Post Hoc Analysis of the SHINE Trial. Stroke. 54(9). e415–e416.

Havenon, Adam de, Shyam Prabhakaran, Karen C. Johnston, et al.. (2022). Blood Pressure and Low‐Density Lipoprotein Cholesterol in Stroke Survivors Versus Controls in the United States From 1999 to 2018. SHILAP Revista de lepidopterología. 2(3). e000286–e000286. 1 indexed citations

10.

Sheth, Kevin N., et al.. (2021). Self-Reported Race as a Social Determinant of Stroke Risk in Observational Versus Clinical Trial Datasets. Journal of Stroke and Cerebrovascular Diseases. 31(2). 106219–106219.

11.

Chen, Ching‐Jen, Dale Ding, Natasha Ironside, et al.. (2019). Statins for neuroprotection in spontaneous intracerebral hemorrhage. Neurology. 93(24). 1056–1066. 40 indexed citations

12.

Southerland, Andrew M., Karen C. Johnston, Carlos A. Molina, et al.. (2016). Suspected Large Vessel Occlusion. Stroke. 47(7). 1965–1967. 55 indexed citations

13.

Powers, William J., Colin P. Derdeyn, José Biller, et al.. (2015). 2015 American Heart Association/American Stroke Association Focused Update of the 2013 Guidelines for the Early Management of Patients With Acute Ischemic Stroke Regarding Endovascular Treatment. Stroke. 46(10). 3020–3035. 1554 indexed citations breakdown →

14.

Connor, Jason T., Kristine Broglio, Valerie Durkalski, William J. Meurer, & Karen C. Johnston. (2015). The Stroke Hyperglycemia Insulin Network Effort (SHINE) trial: an adaptive trial design case study. Trials. 16(1). 72–72. 18 indexed citations

15.

Bruno, Askiel, Valerie Durkalski, Christiana E. Hall, et al.. (2014). The Stroke Hyperglycemia Insulin Network Effort (SHINE) trial protocol: a randomized, blinded, efficacy trial of standard vs. intensive hyperglycemia management in acute stroke. PMC. 1 indexed citations

16.

Khatri, Pooja, et al.. (2011). Ninety-Day Outcome Rates of a Prospective Cohort of Consecutive Patients With Mild Ischemic Stroke. Stroke. 43(2). 560–562. 152 indexed citations

17.

Barrett, Kevin M., Yong Hong Ding, Douglas P. Wagner, David F. Kallmes, & Karen C. Johnston. (2009). Change in Diffusion-Weighted Imaging Infarct Volume Predicts Neurologic Outcome at 90 Days. Stroke. 40(7). 2422–2427. 57 indexed citations

18.

Johnston, Karen C., Kevin M. Barrett, Yong Hong Ding, & Douglas P. Wagner. (2009). Clinical and Imaging Data at 5 Days as a Surrogate for 90-Day Outcome in Ischemic Stroke. Stroke. 40(4). 1332–1333. 21 indexed citations

19.

Noseworthy, John H., Robert A. Gross, Andrew G. Engel, et al.. (2008). Message from the Editors to our US and International Reviewers. Neurology. 70(2). 92–96. 1 indexed citations

20.

Johnston, Karen C. & Bradford B. Worrall. (2003). Teleradiology Assessment of Computerized Tomographs Online Reliability Study (TRACTORS) for Acute Stroke Evaluation. Telemedicine Journal and e-Health. 9(3). 227–233. 41 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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