Helgi Kolk

579 total citations
23 papers, 362 citations indexed

About

Helgi Kolk is a scholar working on Surgery, Molecular Biology and Cardiology and Cardiovascular Medicine. According to data from OpenAlex, Helgi Kolk has authored 23 papers receiving a total of 362 indexed citations (citations by other indexed papers that have themselves been cited), including 15 papers in Surgery, 5 papers in Molecular Biology and 5 papers in Cardiology and Cardiovascular Medicine. Recurrent topics in Helgi Kolk's work include Hip and Femur Fractures (9 papers), Helicobacter pylori-related gastroenterology studies (5 papers) and Gut microbiota and health (5 papers). Helgi Kolk is often cited by papers focused on Hip and Femur Fractures (9 papers), Helicobacter pylori-related gastroenterology studies (5 papers) and Gut microbiota and health (5 papers). Helgi Kolk collaborates with scholars based in Estonia, United Kingdom and Italy. Helgi Kolk's co-authors include Marika Mikelsaar, Krista Lõivukene, Epp Sepp, Jelena Štšepetova, Epp Songisepp, Pirje Hütt, Aare Märtson, Siiri Kõljalg, Imbi Smidt and Kaspar Tootsi and has published in prestigious journals such as Journal of Dairy Science, British Journal Of Nutrition and Clinical Microbiology and Infection.

In The Last Decade

Helgi Kolk

21 papers receiving 351 citations

Peers

Helgi Kolk

SURGE

PHYSI

Ky Young Cho South Korea

Jennifer Kelly United Kingdom

Ary Lopes Cardoso Brazil

José J. Zaragoza Mexico

L. B. van der Aa Netherlands

Viviana Granata Italy

Yumi Oya Japan

Isolde Besseling-van der Vaart Netherlands

Fariborz Mansour-Ghanaei Iran

Ann‐Christine Midtvedt Sweden

Ky Young Cho South Korea

Helgi Kolk

113 ×0.7

67 ×0.7

SURGE

95 ×1.0

PHYSI

29 ×0.3

62 ×1.5

Citations per year, relative to Helgi Kolk Helgi Kolk (= 1×) peers Ky Young Cho

Countries citing papers authored by Helgi Kolk

Since Specialization

Citations

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

Fields of papers citing papers by Helgi Kolk

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Helgi Kolk

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

Cruz‐Jentoft, Alfonso J., Olivier Bruyère, A. Mark Clarfield, et al.. (2025). Guidance on the production of EuGMS guidelines. European Geriatric Medicine. 16(2). 401–410. 1 indexed citations

Kirsimägi, Ülle, et al.. (2024). Impact of frailty on outcomes following emergency laparotomy: a retrospective analysis across diverse clinical conditions. European Journal of Trauma and Emergency Surgery. 50(6). 3299–3309.

Kirsimägi, Ülle, et al.. (2023). Frailty Assessment Can Enhance Current Risk Prediction Tools in Emergency Laparotomy: A Retrospective Cohort Study. World Journal of Surgery. 47(11). 2688–2697. 2 indexed citations

Sepp, Epp, Imbi Smidt, Tiiu Rööp, et al.. (2022). Comparative Analysis of Gut Microbiota in Centenarians and Young People: Impact of Eating Habits and Childhood Living Environment. Frontiers in Cellular and Infection Microbiology. 12. 851404–851404. 32 indexed citations

Tootsi, Kaspar, et al.. (2022). Simple Excel and ICD-10 based dataset calculator for the Charlson and Elixhauser comorbidity indices. BMC Medical Research Methodology. 22(1). 4–4. 19 indexed citations

Tootsi, Kaspar, et al.. (2022). Isolated greater trochanter fracture may impose a comparable risk on older patients’ survival as a conventional hip fracture: a population-wide cohort study. BMC Musculoskeletal Disorders. 23(1). 394–394.

Tootsi, Kaspar, et al.. (2021). Nonoperative hip fracture management practices and patient survival compared to surgical care: an analysis of Estonian population-wide data. Archives of Osteoporosis. 16(1). 101–101. 8 indexed citations

Maiväli, Ülo, et al.. (2021). Causal variation modelling identifies large inter- and intra-regional disparities in physical therapy offered to hip fracture patients in Estonia. Disability and Rehabilitation. 44(17). 4729–4737. 1 indexed citations

Kolk, Helgi, et al.. (2020). High variability in hip fracture post-acute care and dementia patients having worse chances of receiving rehabilitation: an analysis of population-based data from Estonia. European Geriatric Medicine. 11(4). 581–601. 5 indexed citations

10.

Kolk, Helgi, et al.. (2019). Estonian hip fracture data from 2009 to 2017: high rates of nonoperative management and high 1-year mortality. Acta Orthopaedica. 90(2). 159–164. 16 indexed citations

11.

Sepp, Epp, Helgi Kolk, Krista Lõivukene, & Marika Mikelsaar. (2014). Higher blood glucose level associated with body mass index and gut microbiota in elderly people. Microbial Ecology in Health and Disease. 25(0). 45 indexed citations

12.

Curiale, V., et al.. (2013). An unpopular geriatric syndrome: Management of chronic constipation in some European countries. Denmark, Estonia, Italy and Luxembourg. European Geriatric Medicine. 4(6). 421–426. 2 indexed citations

13.

Songisepp, Epp, Pirje Hütt, Siiri Kõljalg, et al.. (2012). Safety of a probiotic cheese containing Lactobacillus plantarum Tensia according to a variety of health indices in different age groups. Journal of Dairy Science. 95(10). 5495–5509. 42 indexed citations

14.

Štšepetova, Jelena, Epp Sepp, Helgi Kolk, et al.. (2011). Diversity and metabolic impact of intestinalLactobacillusspecies in healthy adults and the elderly. British Journal Of Nutrition. 105(8). 1235–1244. 68 indexed citations

15.

Mikelsaar, Marika, Jelena Štšepetova, Pirje Hütt, et al.. (2010). Intestinal Lactobacillus sp. is associated with some cellular and metabolic characteristics of blood in elderly people. Anaerobe. 16(3). 240–246. 33 indexed citations

16.

Maaroos, Heidi‐Ingrid, et al.. (2004). The diagnostic value of endoscopy and Helicobacter pylori tests for peptic ulcer patients in late post-treatment setting. BMC Gastroenterology. 4(1). 27–27. 8 indexed citations

17.

Saks, Kai, et al.. (2003). Prevalence of cardiovascular disorders among the elderly in primary care in Estonia. Scandinavian Journal of Primary Health Care. 21(2). 106–109. 7 indexed citations

18.

Lõivukene, Krista, et al.. (2002). Prevalence of antibiotic resistance of Helicobacter pylori isolates in Estonia during 1995–2000 in comparison to the consumption of antibiotics used in treatment regimens. Clinical Microbiology and Infection. 8(9). 598–603. 21 indexed citations

19.

Kolk, Helgi. (2002). Open access endoscopy in an epidemiological situation of high prevalence of Helicobacter pylori infection: applicability of the guidelines of the European Society for Primary Care Gastroenterology. Family Practice. 19(3). 231–235. 8 indexed citations

20.

Kolk, Helgi. (2000). Metronidazole and Clarithromycin Susceptibility and the Subtypes of VacA of Helicobacter pylori Isolates in Estonia. Scandinavian Journal of Infectious Diseases. 32(1). 59–62. 16 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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