Dag S. Halvorsen

561 total citations
22 papers, 426 citations indexed

About

Dag S. Halvorsen is a scholar working on Physiology, Infectious Diseases and Epidemiology. According to data from OpenAlex, Dag S. Halvorsen has authored 22 papers receiving a total of 426 indexed citations (citations by other indexed papers that have themselves been cited), including 7 papers in Physiology, 5 papers in Infectious Diseases and 5 papers in Epidemiology. Recurrent topics in Dag S. Halvorsen's work include Clostridium difficile and Clostridium perfringens research (4 papers), Reproductive tract infections research (3 papers) and Dementia and Cognitive Impairment Research (3 papers). Dag S. Halvorsen is often cited by papers focused on Clostridium difficile and Clostridium perfringens research (4 papers), Reproductive tract infections research (3 papers) and Dementia and Cognitive Impairment Research (3 papers). Dag S. Halvorsen collaborates with scholars based in Norway, Finland and Sweden. Dag S. Halvorsen's co-authors include Torgeir Engstad, Inger Njølstad, Bjørn Straume, Matti Viitanen, Fred Andersen, Haakon Sjursen, Ellisiv B. Mathiesen, Anne-Merethe Hanssen, Geir Bukholm and Johanna U. Ericson and has published in prestigious journals such as Journal of Clinical Microbiology, The Journal of Urology and Journal of Leukocyte Biology.

In The Last Decade

Dag S. Halvorsen

21 papers receiving 416 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Dag S. Halvorsen Norway	13	93	93	63	59	57	22	426
Srđjan Stefanović Serbia	11	78 0.8×	55 0.6×	21 0.3×	25 0.4×	79 1.4×	57	389
Martijn van der Kuip Netherlands	15	112 1.2×	169 1.8×	87 1.4×	73 1.2×	81 1.4×	41	598
Roxanne Meyer United States	12	83 0.9×	115 1.2×	57 0.9×	31 0.5×	174 3.1×	31	651
Eun Hee Chung South Korea	13	154 1.7×	340 3.7×	71 1.1×	48 0.8×	71 1.2×	61	702
Yong Duk Jeon South Korea	10	78 0.8×	146 1.6×	29 0.5×	17 0.3×	45 0.8×	21	440
Charles J. Mitchell United Kingdom	6	96 1.0×	72 0.8×	156 2.5×	175 3.0×	144 2.5×	8	644
R Crane United Kingdom	6	131 1.4×	112 1.2×	18 0.3×	105 1.8×	146 2.6×	11	621
Yaara Leibovici‐Weissman Israel	12	73 0.8×	120 1.3×	38 0.6×	29 0.5×	48 0.8×	24	431
Muhammad Zahid Iqbal Pakistan	10	64 0.7×	60 0.6×	19 0.3×	26 0.4×	65 1.1×	111	454
Yukihisa Miyazawa Japan	12	57 0.6×	107 1.2×	30 0.5×	37 0.6×	63 1.1×	37	488

Countries citing papers authored by Dag S. Halvorsen

Since Specialization

Citations

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

Fields of papers citing papers by Dag S. Halvorsen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Dag S. Halvorsen. 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 Dag S. Halvorsen. The network helps show where Dag S. Halvorsen may publish in the future.

Co-authorship network of co-authors of Dag S. Halvorsen

This figure shows the co-authorship network connecting the top 25 collaborators of Dag S. Halvorsen. A scholar is included among the top collaborators of Dag S. Halvorsen 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 Dag S. Halvorsen. Dag S. Halvorsen 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

Halvorsen, Dag S., et al.. (2025). Frailty screening of older patients in emergency departments in Norway. Tidsskrift for Den norske legeforening. 145(4).

Jensenius, Mogens, Kristine Mørch, Sheraz Yaqub, et al.. (2024). Alveolar echinococcosis. Tidsskrift for Den norske legeforening. 144(10). 5 indexed citations

Gerdtsson, Axel, Dag S. Halvorsen, Ingrid Glimelius, et al.. (2023). MP33-04 THE EARLY RESULTS OF THE SWENOTECA (SWEDISH NORWEGIAN TESTICULAR CANCER GROUP) INTRODUCTION OF PRIMARY RETROPERITONEAL LYMPH NODE DISSECTION (RPLND) IN SEMINOMA STAGE IIA-IIB ≤ 3cm. The Journal of Urology. 209(Supplement 4). 1 indexed citations

Bjørnerem, Åshild, et al.. (2016). Elevated inflammatory markers predict mortality in long-term ischemic stroke-survivors: a population-based prospective study. Aging Clinical and Experimental Research. 29(3). 379–385. 19 indexed citations

Rosenfeldt, Franklin, Pramote Porapakkham, Kylie Jones, et al.. (2013). Bacteraemia in Ventricular Assist Devices: A Common Complication that Need Not Affect Clinical Outcomes. Heart Lung and Circulation. 23(3). 234–241. 5 indexed citations

Andersen, Fred, Matti Viitanen, Dag S. Halvorsen, et al.. (2012). The effect of stimulation therapy and donepezil on cognitive function in Alzheimer’s disease. A community based RCT with a two-by-two factorial design. BMC Neurology. 12(1). 59–59. 10 indexed citations

Andersen, Fred, Matti Viitanen, Dag S. Halvorsen, Bjørn Straume, & Torgeir Engstad. (2011). Co-morbidity and drug treatment in Alzheimer's disease. A cross sectional study of participants in the Dementia Study in Northern Norway. BMC Geriatrics. 11(1). 58–58. 57 indexed citations

Andersen, Fred, et al.. (2010). Recruitment methods in Alzheimer's disease research: general practice versus population based screening by mail. BMC Medical Research Methodology. 10(1). 35–35. 20 indexed citations

Halvorsen, Dag S., Stein Harald Johnsen, Ellisiv B. Mathiesen, & Inger Njølstad. (2009). The Association between Inflammatory Markers and Carotid Atherosclerosis Is Sex Dependent: the Tromsø Study. Cerebrovascular Diseases. 27(4). 392–397. 41 indexed citations

10.

Hvidsten, Dag, Dag S. Halvorsen, B. P. Berdal, & Tore Jarl Gutteberg. (2008). Chlamydophila pneumoniae diagnostics: importance of methodology in relation to timing of sampling. Clinical Microbiology and Infection. 15(1). 42–49. 19 indexed citations

11.

Melbye, Hasse, Dag S. Halvorsen, Ingeborg Hartz, et al.. (2007). Bronchial airflow limitation, smoking, body mass index, and statin use are strongly associated with the C-reactive protein level in the elderly.. Respiratory Medicine. 101(12). 2541–2549. 28 indexed citations

12.

Halvorsen, Dag S., et al.. (2007). Large Outbreak of Infection and Colonization with Gram-Negative Pathogens Carrying the Metallo-β-Lactamase Gene bla_IMP-4 at a 320-Bed Tertiary Hospital in Australia. Infection Control and Hospital Epidemiology. 28(1). 98–101. 37 indexed citations

13.

Halvorsen, Dag S., Ellisiv B. Mathiesen, Inger Njølstad, et al.. (2006). No detectable Chlamydia pneumoniae and cytomegalovirus DNA in leukocytes in subjects with echolucent and echogenic carotid artery plaques. International Journal of Cardiology. 117(3). 388–394. 7 indexed citations

14.

Hanssen, Anne-Merethe, et al.. (2005). Dissemination of Community-Acquired Methicillin-Resistant Staphylococcus aureus Clones in Northern Norway: Sequence Types 8 and 80 Predominate. Journal of Clinical Microbiology. 43(5). 2118–2124. 61 indexed citations

15.

Halvorsen, Dag S., et al.. (2002). Chlamydia pneumoniae IgA‐ and IgG antibodies in young survivors of myocardial infarction. A comparison of antibody detection by a microimmunofluorescence test and an enzyme immunoassay. Journal of Internal Medicine. 251(2). 142–147. 12 indexed citations

16.

Malm, Dag, Dag S. Halvorsen, Lisbeth Tranebjærg, & Haakon Sjursen. (2000). Immunodeficiency in alpha-mannosidosis: a matched case-control study on immunoglobulins, complement factors, receptor density, phagocytosis and intracellular killing in leucocytes. European Journal of Pediatrics. 159(9). 699–703. 22 indexed citations

17.

Skogen, Vegard, et al.. (2000). Immunity to diphtheria among children in Northern Norway and North-Western Russia. Vaccine. 19(2-3). 197–203. 14 indexed citations

18.

Skogen, Vegard, et al.. (1999). Detection of diphtheria antitoxin by four different methods. Clinical Microbiology and Infection. 5(10). 628–633. 11 indexed citations

19.

Balteskard, Lise, et al.. (1998). Effects of Insulin‐Like Growth Factor 1 on Neutrophil and Monocyte Functions in Normal and Septic States. Journal of Parenteral and Enteral Nutrition. 22(3). 127–135. 18 indexed citations

20.

Balteskard, Lise, Dag S. Halvorsen, Lars Marius Ytrebø, et al.. (1997). The Influence of Growth Hormone on Tumour Necrosis Factor and Neutrophil Leukocyte Function in Sepsis. Scandinavian Journal of Infectious Diseases. 29(4). 393–399. 4 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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