Leon Geffen

1.5k total citations
26 papers, 668 citations indexed

About

Leon Geffen is a scholar working on General Health Professions, Health and Epidemiology. According to data from OpenAlex, Leon Geffen has authored 26 papers receiving a total of 668 indexed citations (citations by other indexed papers that have themselves been cited), including 15 papers in General Health Professions, 8 papers in Health and 7 papers in Epidemiology. Recurrent topics in Leon Geffen's work include Geriatric Care and Nursing Homes (9 papers), Health disparities and outcomes (8 papers) and Chronic Disease Management Strategies (5 papers). Leon Geffen is often cited by papers focused on Geriatric Care and Nursing Homes (9 papers), Health disparities and outcomes (8 papers) and Chronic Disease Management Strategies (5 papers). Leon Geffen collaborates with scholars based in South Africa, Canada and United States. Leon Geffen's co-authors include Peter Lloyd‐Sherlock, Martin McKee, Shah Ebrahim, Gabrielle Kelly, John N. Morris, Karen Charlton, Muhammad A. Dhansay, Elizabeth Howard, John P. Hirdes and Alexandre Kalache and has published in prestigious journals such as SHILAP Revista de lepidopterología, BMJ and BMC Public Health.

In The Last Decade

Leon Geffen

24 papers receiving 644 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Leon Geffen South Africa 13 235 135 126 78 76 26 668
Emma Garacci United States 16 281 1.2× 196 1.5× 140 1.1× 46 0.6× 33 0.4× 46 754
Sonu Hangma Subba India 15 124 0.5× 116 0.9× 83 0.7× 117 1.5× 30 0.4× 31 678
Shayne D. Bland United States 10 269 1.1× 159 1.2× 100 0.8× 54 0.7× 100 1.3× 11 703
Amy Gilbert United States 13 219 0.9× 166 1.2× 94 0.7× 54 0.7× 30 0.4× 34 686
J. Maatoug Tunisia 12 120 0.5× 107 0.8× 71 0.6× 116 1.5× 56 0.7× 72 625
Myo Nyein Aung Japan 15 200 0.9× 137 1.0× 130 1.0× 108 1.4× 44 0.6× 86 744
Theodoros V. Giannouchos United States 12 188 0.8× 115 0.9× 103 0.8× 112 1.4× 162 2.1× 68 620
Lauren Opsasnick United States 14 171 0.7× 326 2.4× 210 1.7× 78 1.0× 121 1.6× 42 808
Matthijs van den Berg Netherlands 17 294 1.3× 67 0.5× 71 0.6× 68 0.9× 156 2.1× 29 973
Kien Trung Nguyen Vietnam 9 470 2.0× 381 2.8× 159 1.3× 36 0.5× 78 1.0× 39 944

Countries citing papers authored by Leon Geffen

Since Specialization
Citations

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

Fields of papers citing papers by Leon Geffen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Leon Geffen

This figure shows the co-authorship network connecting the top 25 collaborators of Leon Geffen. A scholar is included among the top collaborators of Leon Geffen 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 Leon Geffen. Leon Geffen 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
1.
Hogeveen, Sophie, Margaret Saari, Melissa Northwood, et al.. (2023). The interRAI COVID-19 vulnerability screener: Results of a health surveillance initiative for vulnerable adults in the community during the COVID-19 pandemic. Archives of Gerontology and Geriatrics. 113. 105056–105056. 1 indexed citations
2.
Cohen, Cheryl, et al.. (2022). SARS-CoV-2 cases reported from long-term residential facilities (care homes) in South Africa: a retrospective cohort study. BMC Public Health. 22(1). 1035–1035. 3 indexed citations
3.
Heckman, George, David C. Grabowski, John P. Hirdes, et al.. (2021). Proceedings from an International Virtual Townhall: Reflecting on the COVID-19 Pandemic: Themes from Long-Term Care. Journal of the American Medical Directors Association. 22(6). 1128–1132. 26 indexed citations
4.
Hirdes, John P., et al.. (2021). Psychometric Properties, Feasibility, and Acceptability of the Self-Reported interRAI Check-Up Assessment. Journal of the American Medical Directors Association. 23(1). 117–121. 11 indexed citations
5.
Geffen, Leon, Gabrielle Kelly, John N. Morris, Sophie Hogeveen, & John P. Hirdes. (2020). “Establishing the criterion validity of the interRAI Check-Up Self-Report instrument”. BMC Geriatrics. 20(1). 260–260. 13 indexed citations
6.
Cowper, Ben, et al.. (2020). COVID-19 in long-term care facilities in South Africa: No time for complacency. South African Medical Journal. 110(10). 962–962. 5 indexed citations
7.
Lloyd‐Sherlock, Peter, Shah Ebrahim, Leon Geffen, & Martin McKee. (2020). Bearing the brunt of covid-19: older people in low and middle income countries. BMJ. 368. m1052–m1052. 228 indexed citations
8.
Lloyd‐Sherlock, Peter, et al.. (2020). WHO must prioritise the needs of older people in its response to the covid-19 pandemic. BMJ. m1164–m1164. 61 indexed citations
9.
Hirdes, John P., Anja Declercq, Harriet Finne‐Soveri, et al.. (2020). The Long-term Care Pandemic: International Perspectives on COVID-19 and the Future of Nursing Homes. 9 indexed citations
10.
Kelly, Gabrielle, et al.. (2019). “They don’t care about us”: older people’s experiences of primary healthcare in Cape Town, South Africa. BMC Geriatrics. 19(1). 98–98. 68 indexed citations
11.
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13.
Geffen, Leon, Gabrielle Kelly, John N. Morris, & Elizabeth Howard. (2019). Peer-to-peer support model to improve quality of life among highly vulnerable, low-income older adults in Cape Town, South Africa. BMC Geriatrics. 19(1). 279–279. 45 indexed citations
14.
Solanki, Geetesh, et al.. (2019). Population ageing in South Africa: trends, impact, and challenges for the health sector.. PubMed. 2019(1). 175–182. 21 indexed citations
15.
Morris, John N., Anja Declercq, John P. Hirdes, et al.. (2017). Hearing the Voice of the Resident in Long-Term Care Facilities—An Internationally Based Approach to Assessing Quality of Life. Journal of the American Medical Directors Association. 19(3). 207–215. 23 indexed citations
16.
Ainslie, G., Charles Feldman, Leon Geffen, et al.. (2011). Guideline for the management of chronic obstructive pulmonary disease--2011 update.. PubMed. 101(1 Pt 2). 63–73. 28 indexed citations
17.
Kalula, Sebastiana, Mónica Ferreira, Kevin G. F. Thomas, et al.. (2010). Profile and management of patients at a memory clinic. South African Medical Journal. 100(7). 449–449. 13 indexed citations
18.
Geffen, Leon. (2008). AGEING AND THE IMMUNE SYSTEM.
19.
Villiers, Pierre J.T. De & Leon Geffen. (1998). The development of passive health surveillance by a sentinel network of family practitioners in South Africa.. PubMed. 88(3). 256–9. 6 indexed citations
20.
Chapman, P D, et al.. (1991). Proteinuria and the acute mononucleosis-like illness associated with seroconversion in HIV infection.. PubMed. 79(10). 625–6. 1 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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