Ellen Keizer

847 total citations
29 papers, 556 citations indexed

About

Ellen Keizer is a scholar working on Emergency Medicine, General Health Professions and Epidemiology. According to data from OpenAlex, Ellen Keizer has authored 29 papers receiving a total of 556 indexed citations (citations by other indexed papers that have themselves been cited), including 19 papers in Emergency Medicine, 12 papers in General Health Professions and 7 papers in Epidemiology. Recurrent topics in Ellen Keizer's work include Emergency and Acute Care Studies (19 papers), Chronic Disease Management Strategies (6 papers) and Geriatric Care and Nursing Homes (5 papers). Ellen Keizer is often cited by papers focused on Emergency and Acute Care Studies (19 papers), Chronic Disease Management Strategies (6 papers) and Geriatric Care and Nursing Homes (5 papers). Ellen Keizer collaborates with scholars based in Netherlands, Switzerland and Denmark. Ellen Keizer's co-authors include Paul Giesen, Marleen Smits, Michel Wensing, Linda Huibers, Richard Grol, Trudy van der Weijden, Glyn Elwyn, Martin G. T. A. Rutten, Oliver Senn and Ellen Catharina Tveter Deilkås and has published in prestigious journals such as Annals of Internal Medicine, PLoS ONE and BMC Public Health.

In The Last Decade

Ellen Keizer

26 papers receiving 549 citations

Peers

Ellen Keizer

GHP

EPIDE

OBHRM

Grete Moth Denmark

Sabrina J. Poon United States

Giulio Toccafondi Italy

Tina Budnitz United States

Ylva Tomson Sweden

Emily Carrier United States

Daniel Maeng United States

Nerée Claes Belgium

Courtney Cawthon United States

Ellie Bostwick Andres United States

Grete Moth Denmark

Ellen Keizer

205 ×0.9

356 ×1.6

GHP

215 ×1.3

EPIDE

83 ×1.1

OBHRM

107 ×1.5

Citations per year, relative to Ellen Keizer Ellen Keizer (= 1×) peers Grete Moth

Countries citing papers authored by Ellen Keizer

Since Specialization

Citations

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

Fields of papers citing papers by Ellen Keizer

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ellen Keizer

This figure shows the co-authorship network connecting the top 25 collaborators of Ellen Keizer. A scholar is included among the top collaborators of Ellen Keizer 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 Ellen Keizer. Ellen Keizer 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

Vestergaard, Claus Høstrup, Ellen Keizer, Bodil Hammer Bech, et al.. (2024). Point-of-care testing and antibiotics prescribing in out-of-hours general practice: a register-based study in Denmark. BMC Primary Care. 25(1). 31–31. 3 indexed citations

Keizer, Ellen, Oliver Senn, Morten Bondo Christensen, & Linda Huibers. (2021). Use of acute care services by adults with a migrant background: a secondary analysis of a EurOOHnet survey. BMC Family Practice. 22(1). 119–119. 3 indexed citations

Neuner‐Jehle, Stefan, Sereina M. Graber, Ellen Keizer, et al.. (2021). Time trends in general practitioners’ home visits for older patients: a retrospective cross-sectional study from Switzerland. Swiss Medical Weekly. 151(2728). w20539–w20539. 7 indexed citations

Keizer, Ellen, Morten Bondo Christensen, Anders Helles Carlsen, et al.. (2019). Factors related to out-of-hours help-seeking for acute health problems: a survey study using case scenarios. BMC Public Health. 19(1). 33–33. 8 indexed citations

Meier, Rahel, Ellen Keizer, Thomas Rosemann, & Stefan Markun. (2019). Indications and associated factors for prescribing intravenous iron supplementation in Swiss general practice: a retrospective observational study. Swiss Medical Weekly. 149(3738). w20127–w20127. 2 indexed citations

Keizer, Ellen, Linda Huibers, Morten Bondo Christensen, & Oliver Senn. (2018). Impact of alternative healthcare plans on out-of-hours help-seeking intentions in Switzerland. Swiss Medical Weekly. 148(4344). w14686–w14686. 6 indexed citations

Smits, Marleen, Ellen Keizer, Paul Giesen, et al.. (2018). Patient safety culture in out-of-hours primary care services in the Netherlands: a cross-sectional survey. Scandinavian Journal of Primary Health Care. 36(1). 28–35. 26 indexed citations

Smits, Marleen, Ellen Keizer, Paul Ram, & Paul Giesen. (2017). Development and testing of the KERNset: an instrument to assess the quality of telephone triage in out-of-hours primary care services. BMC Health Services Research. 17(1). 798–798. 15 indexed citations

Keizer, Ellen, Paul Giesen, Michel Wensing, et al.. (2017). Migrants’ motives and expectations for contacting out-of-hours primary care: a survey study. BMC Family Practice. 18(1). 92–92. 12 indexed citations

10.

Keizer, Ellen, et al.. (2017). The impact of demand management strategies on parents’ decision-making for out-of-hours primary care: findings from a survey in The Netherlands. BMJ Open. 7(5). e014605–e014605. 7 indexed citations

11.

Smits, Marleen, Ellen Keizer, Paul Giesen, et al.. (2017). The psychometric properties of the ‘safety attitudes questionnaire’ in out-of-hours primary care services in the Netherlands. PLoS ONE. 12(2). e0172390–e0172390. 27 indexed citations

12.

Keizer, Ellen, et al.. (2016). Reducing the use of out-of-hours primary care services: A survey among Dutch general practitioners. European Journal of General Practice. 22(3). 189–195. 30 indexed citations

13.

Smits, Marleen, et al.. (2015). Association between general practice characteristics and use of out-of-hours GP cooperatives. BMC Family Practice. 16(1). 52–52. 27 indexed citations

14.

Keizer, Ellen, et al.. (2015). Contacts with out-of-hours primary care for nonurgent problems: patients’ beliefs or deficiencies in healthcare?. BMC Family Practice. 16(1). 48 indexed citations

15.

Keizer, Ellen, et al.. (2014). Verminderen van zorgconsumptie op huisartsenposten. Huisarts en Wetenschap. 57(10). 510–514. 4 indexed citations

16.

Braspenning, Jozé, Miranda Laurant, Ellen Keizer, et al.. (2013). Minimal improvement of nurses’ motivational interviewing skills in routine diabetes care one year after training: a cluster randomized trial. BMC Family Practice. 14(1). 31 indexed citations

17.

Smits, Marleen, Ellen Keizer, Linda Huibers, & Paul Giesen. (2013). GPs’ experiences with out-of-hours GP cooperatives: A survey study from the Netherlands. European Journal of General Practice. 20(3). 196–201. 15 indexed citations

18.

Keizer, Ellen, et al.. (2013). No identifiable Hb1Ac or lifestyle change after a comprehensive diabetes programme including motivational interviewing: A cluster randomised trial. Scandinavian Journal of Primary Health Care. 31(2). 119–127. 66 indexed citations

19.

Braspenning, Jozé, et al.. (2012). Misperception of patients with type 2 diabetes about diet and physical activity, and its effects on readiness to change*. Journal of Diabetes. 4(4). 417–423. 9 indexed citations

20.

Huibers, Linda, Ellen Keizer, Paul Giesen, Richard Grol, & Michel Wensing. (2012). Nurse telephone triage: good quality associated with appropriate decisions. Family Practice. 29(5). 547–552. 46 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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