Volkert Siersma

21.6k total citations · 1 hit paper
368 papers, 13.5k citations indexed

About

Volkert Siersma is a scholar working on Epidemiology, General Health Professions and Endocrinology, Diabetes and Metabolism. According to data from OpenAlex, Volkert Siersma has authored 368 papers receiving a total of 13.5k indexed citations (citations by other indexed papers that have themselves been cited), including 82 papers in Epidemiology, 72 papers in General Health Professions and 57 papers in Endocrinology, Diabetes and Metabolism. Recurrent topics in Volkert Siersma's work include Chronic Disease Management Strategies (35 papers), Global Cancer Incidence and Screening (26 papers) and Dementia and Cognitive Impairment Research (25 papers). Volkert Siersma is often cited by papers focused on Chronic Disease Management Strategies (35 papers), Global Cancer Incidence and Screening (26 papers) and Dementia and Cognitive Impairment Research (25 papers). Volkert Siersma collaborates with scholars based in Denmark, United Kingdom and Norway. Volkert Siersma's co-authors include Ann Dorrit Guassora, Kirsti Malterud, John Brodersen, Niels de Fine Olivarius, Lars S. Rasmussen, Frans Boch Waldorff, Lars Bjerrum, Hanne Abildstrøm, Anni Brit Sternhagen Nielsen and P. Holstein and has published in prestigious journals such as The Lancet, JAMA and SHILAP Revista de lepidopterología.

In The Last Decade

Volkert Siersma

347 papers receiving 13.1k citations

Hit Papers

align trajectories sort by overperformance

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.

Sample Size in Qualitative Interview Studies

2015 5.9k citations Kirsti Malterud, Volkert Siersma et al. Qualitative Health Research profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Volkert Siersma Denmark	44	2.6k	1.9k	1.5k	1.3k	1.3k	368	13.5k
Karen A. Robinson United States	64	1.9k 0.7×	1.7k 0.9×	1.9k 1.2×	717 0.5×	1.7k 1.3×	215	16.0k
Brian Hutton Canada	61	1.4k 0.5×	1.9k 1.0×	2.0k 1.3×	1.3k 1.0×	3.0k 2.2×	371	18.5k
Gouke J. Bonsel Netherlands	60	3.6k 1.4×	2.8k 1.5×	2.3k 1.5×	1.7k 1.3×	2.7k 2.1×	296	21.0k
Rahim Moineddin Canada	61	2.4k 0.9×	2.0k 1.1×	2.2k 1.4×	1.1k 0.8×	2.2k 1.7×	462	13.9k
Donald A. Redelmeier Canada	73	3.1k 1.2×	2.5k 1.3×	2.1k 1.4×	1.3k 1.0×	2.8k 2.1×	340	22.3k
Hossam M. Hammady Qatar	3	2.1k 0.8×	2.1k 1.1×	1.6k 1.0×	1.5k 1.2×	2.0k 1.5×	4	15.2k
Paul Kind United Kingdom	48	4.4k 1.7×	1.6k 0.8×	1.8k 1.2×	1.2k 0.9×	2.5k 1.9×	146	17.9k
Marion Campbell United Kingdom	60	4.1k 1.6×	4.4k 2.3×	1.9k 1.3×	1.4k 1.0×	3.3k 2.5×	239	20.4k
Charles Poole United States	55	2.5k 1.0×	3.2k 1.7×	3.1k 2.0×	1.3k 1.0×	2.6k 2.0×	190	20.0k
Angela Wood United Kingdom	41	1.7k 0.7×	2.7k 1.4×	2.5k 1.6×	1.4k 1.1×	2.3k 1.7×	155	18.4k

Countries citing papers authored by Volkert Siersma

Since Specialization

Citations

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

Fields of papers citing papers by Volkert Siersma

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Volkert Siersma

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

Overbeck, Gritt, et al.. (2025). Recent life events and adverse childhood experiences in predicting antenatal depression and anxiety: cross-sectional study. Family Practice. 42(1). 2 indexed citations

Rozing, Maarten Pieter, et al.. (2024). Developing a prediction model to identify people with severe mental illness without regular contact to their GP - a study based on data from the Danish national registers. BMC Psychiatry. 24(1). 301–301. 1 indexed citations

Persson, Frederik, Mikkel Christensen, Margit Kriegbaum, et al.. (2024). The development of type 2 diabetes management in people with severe mental illness in the Capital Region of Denmark from 2001 to 2015. Acta Psychiatrica Scandinavica. 149(3). 219–233. 1 indexed citations

Siersma, Volkert, et al.. (2024). Good 5‐year results and a low redislocation rate using an à la carte treatment algorithm for patellofemoral instability in patients with severe trochlea dysplasia. Knee Surgery Sports Traumatology Arthroscopy. 33(2). 401–412. 6 indexed citations

Siersma, Volkert, et al.. (2024). Downstream healthcare use following breast cancer screening: a register-based cohort study. Journal of Epidemiology & Community Health. 79(4). 242–248.

Overbeck, Gritt, Jakob Kragstrup, Mette Gørtz, et al.. (2023). Family wellbeing in general practice: a study protocol for a cluster-randomised trial of the web-based resilience programme on early child development. Trials. 24(1). 7–7. 6 indexed citations

Overbeck, Gritt, et al.. (2023). Uptake of signposting to web-based resources: pregnant women’s use of a preventive web-based intervention. BMC Primary Care. 24(1). 189–189. 2 indexed citations

Witt, Klaus, et al.. (2022). Use of online material in teaching general practice. 14(24).

Bækgaard, Josefine S., Volkert Siersma, Jochen Hinkelbein, et al.. (2022). Comparing restrictive versus liberal oxygen strategies for trauma patients — the TRAUMOX2 trial: protocol for a randomised clinical trial. BMJ Open. 12(11). e064047–e064047. 5 indexed citations

10.

Siersma, Volkert, et al.. (2022). Use and diagnostic outcomes of cancer patient pathways in Denmark – is the place of initial diagnostic work-up an important factor?. BMC Health Services Research. 22(1). 130–130. 8 indexed citations

11.

Ertmann, Ruth Kirk, Margit Kriegbaum, Mette Skovgaard Væver, et al.. (2021). What factors are most important for the development of the maternal–fetal relationship? A prospective study among pregnant women in Danish general practice. BMC Psychology. 9(1). 2–2. 21 indexed citations

12.

Ertmann, Ruth Kirk, Jakob Kragstrup, Volkert Siersma, et al.. (2020). Selection bias in general practice research: analysis in a cohort of pregnant Danish women. Scandinavian Journal of Primary Health Care. 38(4). 464–472. 8 indexed citations

13.

Hoffmann, Kristine, Volkert Siersma, Nanna Aue Sobol, et al.. (2020). The role of physical and cognitive function in performance of activities of daily living in patients with mild-to-moderate Alzheimer’s disease – a cross-sectional study. BMC Geriatrics. 20(1). 513–513. 41 indexed citations

14.

Brodersen, John, et al.. (2020). Overdiagnosis of lung cancer with low-dose computed tomography screening: meta-analysis of the randomised clinical trials. Breathe. 16(1). 200013–200013. 57 indexed citations

15.

Nygaard, Birte, Mia Klinten Grand, Volkert Siersma, et al.. (2019). Changes in Prescription Routines for Treating Hypothyroidism Between 2001 and 2015: An Observational Study of 929,684 Primary Care Patients in Copenhagen. Thyroid. 29(7). 910–919. 46 indexed citations

16.

Jørgensen, Terese Sara Høj, Charlotte Juul Nilsson, Rikke Lund, Volkert Siersma, & Stefan Fors. (2018). Intergenerational relations and social mobility: Social inequality in physical function in old age. Archives of Gerontology and Geriatrics. 80. 58–64. 8 indexed citations

17.

Bjerrum, Lars, et al.. (2018). Quality assessment in general practice: diagnosis and antibiotic treatment of acute respiratory tract infections. Scandinavian Journal of Primary Health Care. 36(4). 372–379. 32 indexed citations

18.

Jørgensen, Terese Sara Høj, Volkert Siersma, Rikke Lund, & Charlotte Juul Nilsson. (2018). Mobility limitation as determinant of primary care use and ambulatory care sensitive conditions. European Geriatric Medicine. 10(1). 53–60. 1 indexed citations

19.

Malterud, Kirsti, Volkert Siersma, & Ann Dorrit Guassora. (2015). Sample Size in Qualitative Interview Studies. Qualitative Health Research. 26(13). 1753–1760. 5937 indexed citations breakdown →

20.

Graff, Heidi J., Volkert Siersma, Jakob Kragstrup, & Birgit Petersson. (2015). Increased health-care utilisation in international adoptees.. PubMed. 62(8). A5111–A5111. 3 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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