Hannah Ewald

1.9k total citations · 1 hit paper
50 papers, 952 citations indexed

About

Hannah Ewald is a scholar working on Statistics, Probability and Uncertainty, Economics and Econometrics and Surgery. According to data from OpenAlex, Hannah Ewald has authored 50 papers receiving a total of 952 indexed citations (citations by other indexed papers that have themselves been cited), including 19 papers in Statistics, Probability and Uncertainty, 13 papers in Economics and Econometrics and 9 papers in Surgery. Recurrent topics in Hannah Ewald's work include Meta-analysis and systematic reviews (19 papers), Health Systems, Economic Evaluations, Quality of Life (12 papers) and scientometrics and bibliometrics research (6 papers). Hannah Ewald is often cited by papers focused on Meta-analysis and systematic reviews (19 papers), Health Systems, Economic Evaluations, Quality of Life (12 papers) and scientometrics and bibliometrics research (6 papers). Hannah Ewald collaborates with scholars based in Switzerland, Germany and Canada. Hannah Ewald's co-authors include Lars G. Hemkens, Matthias Briel, Heiner C. Bucher, Christian Appenzeller‐Herzog, Julian Hirt, Viktoria Gloy, John P. A. Ioannidis, Rémy Boscacci, Heike Raatz and Hansjakob Furrer and has published in prestigious journals such as Cochrane Database of Systematic Reviews, BMJ and The Journal of Urology.

In The Last Decade

Hannah Ewald

47 papers receiving 933 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.

Searching two or more databases decreased the risk of missing relevant studies: a metaresearch study

2022 82 citations Hannah Ewald, Irma Klerings et al. Journal of Clinical Epidemiology profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Hannah Ewald Switzerland	18	184	157	132	124	123	50	952
Marien González‐Lorenzo Italy	19	270 1.5×	176 1.1×	110 0.8×	115 0.9×	294 2.4×	42	1.6k
M. Sanni Ali United Kingdom	19	193 1.0×	98 0.6×	207 1.6×	121 1.0×	138 1.1×	45	1.2k
Beth Woods United Kingdom	15	179 1.0×	112 0.7×	370 2.8×	142 1.1×	187 1.5×	59	1.5k
Élodie Perrodeau France	21	81 0.4×	237 1.5×	205 1.6×	67 0.5×	99 0.8×	43	1.3k
Nawar Diar Bakerly United Kingdom	16	110 0.6×	150 1.0×	106 0.8×	176 1.4×	76 0.6×	49	937
Annalisa Rosso Italy	18	194 1.1×	157 1.0×	126 1.0×	98 0.8×	201 1.6×	56	885
Belchin Kostov Spain	26	253 1.4×	221 1.4×	97 0.7×	136 1.1×	211 1.7×	77	1.9k
Nicole White Australia	18	123 0.7×	101 0.6×	93 0.7×	176 1.4×	67 0.5×	88	1.1k
Carolina Riveros France	13	93 0.5×	219 1.4×	179 1.4×	142 1.1×	129 1.0×	26	1.0k
Sarah Edwards United Kingdom	18	160 0.9×	596 3.8×	222 1.7×	149 1.2×	412 3.3×	66	1.7k

Countries citing papers authored by Hannah Ewald

Since Specialization

Citations

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

Fields of papers citing papers by Hannah Ewald

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hannah Ewald

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

Ebrahimi, Fahim, Ramin Ebrahimi, Marc A. Beer, et al.. (2025). Colchicine for the secondary prevention of cardiovascular events. Cochrane Database of Systematic Reviews. 2025(11). CD014808–CD014808.

Hirt, Julian, et al.. (2024). Guidance on terminology, application, and reporting of citation searching: the TARCiS statement. BMJ. 385. e078384–e078384. 29 indexed citations

Mündermann, Annegret, Corina Nüesch, Hannah Ewald, & Ilse Jonkers. (2024). Osteoarthritis year in review 2024: Biomechanics. Osteoarthritis and Cartilage. 32(12). 1530–1541. 2 indexed citations

Hirt, Julian, et al.. (2023). Citation tracking for systematic literature searching: A scoping review. Research Synthesis Methods. 14(3). 563–579. 35 indexed citations

Ewald, Hannah, et al.. (2023). Citation tracking for systematic literature searching: a scoping review (CINAHL).. 1 indexed citations

Hirt, Julian, Hannah Ewald, Matthias Briel, & Stefan Schandelmaier. (2023). Searching a methods topic: practical challenges and implications for search design. Journal of Clinical Epidemiology. 166. 111201–111201. 4 indexed citations

Ewald, Hannah, et al.. (2023). Ex-vivo experimental strategies for assessing unconstrained shoulder biomechanics: a scoping review protocol. F1000Research. 11. 77–77. 1 indexed citations

Hirt, Julian, et al.. (2022). Citation tracking for systematic literature searching: a scoping review. medRxiv. 2 indexed citations

Ewald, Hannah, Irma Klerings, Gernot Wagner, et al.. (2022). Searching two or more databases decreased the risk of missing relevant studies: a metaresearch study. Journal of Clinical Epidemiology. 149. 154–164. 82 indexed citations breakdown →

10.

Hirt, Julian, et al.. (2021). Using citation tracking for systematic literature searching - study protocol for a scoping review of methodological studies and a Delphi study. F1000Research. 9. 1386–1386. 1 indexed citations

11.

Signorell, Aita, Christian Appenzeller‐Herzog, Hannah Ewald, et al.. (2021). Methodological approaches for conducting follow-up research with clinical trial participants: a scoping review and expert interviews. Trials. 22(1). 961–961. 4 indexed citations

12.

Cord, Kimberly A. Mc, Hannah Ewald, Arnav Agarwal, et al.. (2021). Treatment effects in randomised trials using routinely collected data for outcome assessment versus traditional trials: meta-research study. BMJ. 372. n450–n450. 27 indexed citations

13.

Hirt, Julian, et al.. (2020). Using citation tracking for systematic literature searching - study protocol for a scoping review of methodological studies and an expert survey. F1000Research. 9. 1386–1386. 20 indexed citations

14.

Ewald, Hannah, Irma Klerings, Gernot Wagner, et al.. (2020). Abbreviated and comprehensive literature searches led to identical or very similar effect estimates: a meta-epidemiological study. Journal of Clinical Epidemiology. 128. 1–12. 15 indexed citations

15.

Appenzeller‐Herzog, Christian, et al.. (2019). Comparative effectiveness of common therapies for Wilson disease: A systematic review and meta‐analysis of controlled studies. Liver International. 39(11). 2136–2152. 34 indexed citations

16.

Ewald, Hannah, et al.. (2019). Nonrandomized studies using causal-modeling may give different answers than RCTs: a meta-epidemiological study. Journal of Clinical Epidemiology. 118. 29–41. 13 indexed citations

17.

Speich, Benjamin, Viktoria Gloy, Nadine Schur, et al.. (2019). A scoping review shows that several nonvalidated budget planning tools for randomized trials are available. Journal of Clinical Epidemiology. 117. 9–19. 6 indexed citations

18.

Cord, Kimberly A. Mc, Hannah Ewald, Matthias Briel, et al.. (2019). Current use and costs of electronic health records for clinical trial research: a descriptive study. CMAJ Open. 7(1). E23–E32. 37 indexed citations

19.

Ewald, Hannah, et al.. (2016). The Clinical Effectiveness of Pneumococcal Conjugate Vaccines: A Systematic Review and Meta-analysis of Randomized Controlled Trials. Deutsches Ärzteblatt international. 113(9). 139–46. 29 indexed citations

20.

Ewald, Hannah, Joanna Kirby, Karen Rees, & Wendy Robertson. (2013). Parent-only interventions in the treatment of childhood obesity: a systematic review of randomized controlled trials. Journal of Public Health. 36(3). 476–489. 52 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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