I. Lygren

5.7k total citations · 2 hit papers
72 papers, 4.2k citations indexed

About

I. Lygren is a scholar working on Epidemiology, Genetics and Surgery. According to data from OpenAlex, I. Lygren has authored 72 papers receiving a total of 4.2k indexed citations (citations by other indexed papers that have themselves been cited), including 27 papers in Epidemiology, 26 papers in Genetics and 21 papers in Surgery. Recurrent topics in I. Lygren's work include Inflammatory Bowel Disease (25 papers), Microscopic Colitis (23 papers) and Neuropeptides and Animal Physiology (15 papers). I. Lygren is often cited by papers focused on Inflammatory Bowel Disease (25 papers), Microscopic Colitis (23 papers) and Neuropeptides and Animal Physiology (15 papers). I. Lygren collaborates with scholars based in Norway, Sweden and Denmark. I. Lygren's co-authors include Jostein Sauar, Jørgen Jahnsen, Morten H. Vatn, Bjørn Moum, Magne Henriksen, Njaal Stray, E. Aadland, Tom Schulz, Inger Camilla Solberg and Tomm Bernklev and has published in prestigious journals such as Gastroenterology, PLoS ONE and Gut.

In The Last Decade

I. Lygren

71 papers receiving 4.0k citations

Hit Papers

Clinical course during th... 2007 2026 2013 2019 2008 2007 100 200 300 400 500
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.

  1. Clinical course during the first 10 years of ulcerative colitis: results from a population-based inception cohort (IBSEN Study)
    2008 536 citations Inger Camilla Solberg, I. Lygren et al. Scandinavian Journal of Gastroenterology profile →
  2. Clinical Course in Crohn’s Disease: Results of a Norwegian Population-Based Ten-Year Follow-Up Study
    2007 526 citations Inger Camilla Solberg, Morten H. Vatn et al. profile →

Author Peers

Peers are selected by citation overlap in the author's most active subfields. citations · hero ref

Author Last Decade Papers Cites
I. Lygren 3.0k 2.6k 1.5k 454 336 72 4.2k
E. Aadland 2.9k 0.9× 2.6k 1.0× 1.9k 1.2× 669 1.5× 533 1.6× 81 5.0k
Stanley A. Cohen 2.6k 0.8× 1.6k 0.6× 1.4k 0.9× 693 1.5× 690 2.1× 91 4.5k
K Gecse 3.1k 1.0× 2.2k 0.8× 1.9k 1.3× 596 1.3× 594 1.8× 174 4.6k
R.L. Goodacre 1.4k 0.5× 1.2k 0.5× 894 0.6× 419 0.9× 424 1.3× 29 2.8k
R. Stockbrügger 1.2k 0.4× 1.1k 0.4× 1.5k 1.0× 834 1.8× 178 0.5× 101 3.6k
Arne Røseth 1.7k 0.6× 1.1k 0.4× 963 0.6× 414 0.9× 543 1.6× 60 3.2k
Nilesh Chande 1.8k 0.6× 1.6k 0.6× 872 0.6× 340 0.7× 308 0.9× 95 3.2k
Alastair M. Connell 1.2k 0.4× 1.1k 0.4× 1.6k 1.0× 1.2k 2.6× 116 0.3× 86 3.6k
Pierre Paré 1.3k 0.4× 1.2k 0.4× 1.8k 1.2× 1.8k 3.9× 537 1.6× 63 4.0k
Perttu Arkkila 673 0.2× 1.5k 0.6× 1.0k 0.7× 494 1.1× 201 0.6× 94 3.2k

Countries citing papers authored by I. Lygren

Since Specialization
Citations

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

Fields of papers citing papers by I. Lygren

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of I. Lygren

This figure shows the co-authorship network connecting the top 25 collaborators of I. Lygren. A scholar is included among the top collaborators of I. Lygren 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 I. Lygren. I. Lygren is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
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Hofstad, Bjørn, et al.. (2010). Risikofaktorer for blødende magesår. Tidsskrift for Den norske legeforening. 130(11). 1135–1139. 8 indexed citations
4.
Solberg, Inger Camilla, I. Lygren, Jørgen Jahnsen, et al.. (2008). Clinical course during the first 10 years of ulcerative colitis: results from a population-based inception cohort (IBSEN Study). Scandinavian Journal of Gastroenterology. 44(4). 431–440. 536 indexed citations breakdown →
5.
Bengtson, May‐Bente, Camilla Solberg, Geir Aamodt, et al.. (2008). Familial aggregation in Crohn's disease and ulcerative colitis in a Norwegian population-based cohort followed for ten years. Journal of Crohn s and Colitis. 3(2). 92–99. 31 indexed citations
6.
Solberg, Inger Camilla, I. Lygren, Milada Cvancarova, et al.. (2008). Predictive Value of Serologic Markers in a Population-based Norwegian Cohort with Inflammatory Bowel Disease. Inflammatory Bowel Diseases. 15(3). 406–414. 39 indexed citations
7.
Henriksen, Magne, Jørgen Jahnsen, I. Lygren, et al.. (2007). Clinical course in Crohn's disease: Results of a five-year population-based follow-up study (the IBSEN study). Scandinavian Journal of Gastroenterology. 42(5). 602–610. 151 indexed citations
8.
Negaard, Anne, Vemund Paulsen, Leiv Sandvik, et al.. (2007). A prospective randomized comparison between two MRI studies of the small bowel in Crohn’s disease, the oral contrast method and MR enteroclysis. European Radiology. 17(9). 2294–2301. 173 indexed citations
9.
Henriksen, Magne, Jørgen Jahnsen, I. Lygren, et al.. (2006). Change of diagnosis during the first five years after onset of inflammatory bowel disease: Results of a prospective follow-up study (the IBSEN Study). Scandinavian Journal of Gastroenterology. 41(9). 1037–1043. 86 indexed citations
10.
Borthne, Arne, et al.. (2003). Bowel MR imaging with oral Gastrografin: an experimental study with healthy volunteers. European Radiology. 13(1). 100–106. 18 indexed citations
11.
Bergeijk, Jeroen D. van, J. H. P. Wilson, Ole Haagen Nielsen, et al.. (2002). Octreotide in patients with active ulcerative colitis treated with high dose corticosteroids (OPUS 1). European Journal of Gastroenterology & Hepatology. 14(3). 243–248. 14 indexed citations
12.
Øktedalen, Olav, et al.. (1998). Intestinal lgA- and IgM-producing Cells are not Decreased in Marathon Runners. International Journal of Sports Medicine. 19(6). 425–431. 15 indexed citations
13.
Moum, Bjørn, Anders Ekbom, Morten H. Vatn, et al.. (1997). Clinical Course during the 1st Year after Diagnosis in Ulcerative Colitis and Crohn's Disease: Results of a Large, Prospective Population-based Study in Southeastern Norway, 1990-93. Scandinavian Journal of Gastroenterology. 32(10). 1005–1012. 136 indexed citations
14.
Moum, Bjørn, Morten H. Vatn, Anders Ekbom, et al.. (1996). Incidence of Crohn's Disease in Four Counties in Southeastern Norway, 1990–93 A Prospective Population-Based Study. Scandinavian Journal of Gastroenterology. 31(4). 355–361. 136 indexed citations
15.
Moum, Bjørn, Anders Ekbom, O. Fausa, et al.. (1995). Incidence of Inflammatory Bowel Disease in Southeastern Norway: Evaluation of Methods after 1 Year of Registration. Digestion. 56(5). 377–381. 78 indexed citations
16.
Gunnes, Pål, O. Reikerås, & I. Lygren. (1986). Secretin infusion in acute ischemic left ventricular failure: effects on myocardial performance and metabolism in a closed-chest dog model.. Journal of Pharmacology and Experimental Therapeutics. 239(3). 915–918. 5 indexed citations
17.
Revhaug, Arthur, et al.. (1985). Increased Plasma Levels of Vasoactive Intestinal Polypeptide in Pigs during Endotoxinaemia. European Surgical Research. 17(2). 75–82. 17 indexed citations
18.
Lygren, I., Arthur Revhaug, P. G. Burhol, Karl Erik Giercksky, & Trond Jenssen. (1984). Vasoactive Intestinal Polypeptide and Somatostatin in Leucocytes. Scandinavian Journal of Clinical and Laboratory Investigation. 44(4). 347–351. 49 indexed citations
19.
Lygren, I., Arthur Revhaug, P. G. Burhol, & Karl Erik Giercksky. (1984). Portal and Systemic Plasma VIP and Secretin during Intravenous Infusion of Escherichia coli Endotoxin in Pigs. Scandinavian Journal of Gastroenterology. 19(8). 1048–1052. 6 indexed citations
20.
Jorde, Rolf, et al.. (1979). The effect of intragastric infusion of bile, meat extract, CaCl2, and ethanol on plasma VIP and gastrin and on gastric H+ and pepsin outputs.. Munich Personal RePEc Archive (Ludwig Maximilian University of Munich). 11(4). 330–3. 2 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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