Robert Challen

2.4k total citations · 2 hit papers
19 papers, 1.1k citations indexed

About

Robert Challen is a scholar working on Infectious Diseases, Epidemiology and Modeling and Simulation. According to data from OpenAlex, Robert Challen has authored 19 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 6 papers in Infectious Diseases, 6 papers in Epidemiology and 4 papers in Modeling and Simulation. Recurrent topics in Robert Challen's work include SARS-CoV-2 and COVID-19 Research (4 papers), COVID-19 epidemiological studies (4 papers) and Respiratory viral infections research (3 papers). Robert Challen is often cited by papers focused on SARS-CoV-2 and COVID-19 Research (4 papers), COVID-19 epidemiological studies (4 papers) and Respiratory viral infections research (3 papers). Robert Challen collaborates with scholars based in United Kingdom, United States and Italy. Robert Challen's co-authors include Krasimira Tsaneva‐Atanasova, Thomas L. Edwards, Martin Pitt, Luke Gompels, Joshua C. Denny, León Danon, Ellen Brooks‐Pollock, Louise Dyson, Jonathan M. Read and Lucas Lacasa and has published in prestigious journals such as PLoS ONE, Philosophical Transactions of the Royal Society B Biological Sciences and BMJ.

In The Last Decade

Robert Challen

16 papers receiving 1.1k citations

Hit Papers

Artificial intelligence, bias and clinical safety 2019 2026 2021 2023 2019 2021 100 200 300 400 500
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.

  1. Artificial intelligence, bias and clinical safety
    2019 542 citations Robert Challen, Joshua C. Denny et al. BMJ Quality & Safety profile →
  2. Risk of mortality in patients infected with SARS-CoV-2 variant of concern 202012/1: matched cohort study
    2021 452 citations Robert Challen, Ellen Brooks‐Pollock et al. BMJ profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Robert Challen United Kingdom 9 416 291 185 172 158 19 1.1k
Khalid Alhasan Saudi Arabia 21 321 0.8× 269 0.9× 126 0.7× 155 0.9× 107 0.7× 89 1.5k
Megan Coffee United States 12 391 0.9× 108 0.4× 171 0.9× 264 1.5× 177 1.1× 19 1.1k
Bilal A. Mateen United Kingdom 14 213 0.5× 162 0.6× 137 0.7× 111 0.6× 41 0.3× 42 905
Hagai Rossman Israel 13 221 0.5× 67 0.2× 120 0.6× 74 0.4× 129 0.8× 21 1.0k
Smadar Shilo Israel 20 239 0.6× 76 0.3× 126 0.7× 80 0.5× 121 0.8× 41 1.4k
Benjamin Rader United States 19 297 0.7× 66 0.2× 111 0.6× 93 0.5× 490 3.1× 42 1.4k
Dilhan Weeraratne United States 5 148 0.4× 329 1.1× 195 1.1× 226 1.3× 21 0.1× 15 1.1k
Basema Saddik Saudi Arabia 20 300 0.7× 79 0.3× 70 0.4× 53 0.3× 80 0.5× 67 1.2k
Meng Jiang China 9 555 1.3× 50 0.2× 192 1.0× 575 3.3× 150 0.9× 16 1.4k
Ziyue Zu China 6 544 1.3× 46 0.2× 185 1.0× 528 3.1× 149 0.9× 13 1.4k

Countries citing papers authored by Robert Challen

Since Specialization
Citations

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

Fields of papers citing papers by Robert Challen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Robert Challen. 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 Robert Challen. The network helps show where Robert Challen may publish in the future.

Co-authorship network of co-authors of Robert Challen

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

All Works

19 of 19 papers shown
1.
Bullock, Seth, Nirav Ajmeri, Michaela Black, et al.. (2024). Artificial intelligence for collective intelligence: a national-scale research strategy. The Knowledge Engineering Review. 39. 1 indexed citations
2.
Young, Katherine, Nicholas J. Thomas, Bilal A. Mateen, et al.. (2024). Risk factor associations for severe COVID-19, influenza and pneumonia in people with diabetes to inform future pandemic preparations: UK population-based cohort study. BMJ Open. 14(1). e078135–e078135. 6 indexed citations
3.
Thomas, Nicholas J., Robert Challen, Angus G. Jones, et al.. (2024). Safety and effectiveness of SGLT2 inhibitors in a UK population with type 2 diabetes and aged over 70 years: an instrumental variable approach. Diabetologia. 67(9). 1817–1827. 9 indexed citations
4.
Challen, Robert, Rachel Kwiatkowska, Catherine Hyams, et al.. (2024). Combined multiplex panel test results are a poor estimate of disease prevalence without adjustment for test error. PLoS Computational Biology. 20(4). e1012062–e1012062.
5.
6.
Hyams, Catherine, David Arnold, Robyn Heath, et al.. (2023). Parapneumonic effusions related to Streptococcus pneumoniae : serotype and disease severity trends from 2006 to 2018 in Bristol, UK. BMJ Open Respiratory Research. 10(1). e001440–e001440.
7.
Hyams, Catherine, Robert Challen, David Hettle, et al.. (2023). Serotype Distribution and Disease Severity in Adults Hospitalized with Streptococcus pneumoniae Infection, Bristol and Bath, UK, 2006‒2022. Emerging infectious diseases. 29(10). 18 indexed citations
8.
9.
Hyams, Catherine, George Nava, Robert Challen, et al.. (2023). Impact of SARS-CoV-2 infective exacerbation of chronic obstructive pulmonary disease on clinical outcomes in a prospective cohort study of hospitalised adults. Journal of the Royal Society of Medicine. 116(11). 371–385. 8 indexed citations
10.
Challen, Robert, Gareth J Griffith, Lucas Lacasa, & Krasimira Tsaneva‐Atanasova. (2022). Algorithmic hospital catchment area estimation using label propagation. BMC Health Services Research. 22(1). 828–828. 1 indexed citations
11.
Challen, Robert. (2022). dtrackr: An R package for tracking the provenance ofdata. The Journal of Open Source Software. 7(80). 4707–4707. 1 indexed citations
12.
Challen, Robert, Ellen Brooks‐Pollock, Krasimira Tsaneva‐Atanasova, & León Danon. (2021). Meta-analysis of the severe acute respiratory syndrome coronavirus 2 serial intervals and the impact of parameter uncertainty on the coronavirus disease 2019 reproduction number. Statistical Methods in Medical Research. 31(9). 1686–1703. 18 indexed citations
13.
Vegvari, Carolin, Sam Abbott, Frank Ball, et al.. (2021). Commentary on the use of the reproduction number R during the COVID-19 pandemic. Statistical Methods in Medical Research. 31(9). 1675–1685. 25 indexed citations
14.
Challen, Robert, Krasimira Tsaneva‐Atanasova, Martin Pitt, et al.. (2021). Estimates of regional infectivity of COVID-19 in the United Kingdom following imposition of social distancing measures. Philosophical Transactions of the Royal Society B Biological Sciences. 376(1829). 20200280–20200280. 11 indexed citations
15.
Challen, Robert, Ellen Brooks‐Pollock, Jonathan M. Read, et al.. (2021). Risk of mortality in patients infected with SARS-CoV-2 variant of concern 202012/1: matched cohort study. BMJ. 372. n579–n579. 452 indexed citations breakdown →
16.
Lacasa, Lucas, Robert Challen, Ellen Brooks‐Pollock, & León Danon. (2021). Correction: A flexible method for optimising sharing of healthcare resources and demand in the context of the COVID-19 pandemic. PLoS ONE. 16(4). e0251222–e0251222. 2 indexed citations
17.
Lacasa, Lucas, Robert Challen, Ellen Brooks‐Pollock, & León Danon. (2020). A flexible method for optimising sharing of healthcare resources and demand in the context of the COVID-19 pandemic. PLoS ONE. 15(10). e0241027–e0241027. 21 indexed citations
18.
Challen, Robert, Krasimira Tsaneva‐Atanasova, Thomas L. Edwards, et al.. (2020). Factors influencing digital review of pathology test results in an inpatient setting: a cross-sectional study. JAMIA Open. 3(2). 290–298. 1 indexed citations
19.
Challen, Robert, Joshua C. Denny, Martin Pitt, et al.. (2019). Artificial intelligence, bias and clinical safety. BMJ Quality & Safety. 28(3). 231–237. 542 indexed citations breakdown →

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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