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Researcher · Agia Olga Hospital · Greece

John A. Karagiannis

John A. Karagiannis publishes mostly in Surgery, Oncology and Pulmonary and Respiratory Medicine, on topics such as Colorectal Cancer Screening and Detection, Inflammatory Bowel Disease and Gastric Cancer Management and Outcomes.

OpenAlex
World rank
#2,070,719
of 7,710,434 ranked researchers
Rank in Greece
#8,753
of 33,280
Works
34
Citations
2.9k
Citations per work
86.2
h-index
15
i10-index 17Top 27% in Surgery
John A. Karagiannis

What does John A. Karagiannis research?

John A. Karagiannis's work is mostly in Medicine (52%), Biochemistry, Genetics and Molecular Biology (10%).

Health Sciences: 18 works · 51.6% of their workMedicine: 18 works · 51.6% of their workSurgery: 5 works · 15.8% of their workOncology: 4 works · 12.6% of their workPulmonary and Respiratory Medicine: 4 works · 10.5% of their workEpidemiology: 3 works · 7.4% of their workGastroenterology: 2 works · 5.3% of their workEverything else: 13 works · 37.9% of their workLife Sciences: 4 works · 10.5% of their workBiochemistry, Genetics and Molecular Biology: 4 works · 10.5% of their workGenetics: 4 works · 10.5% of their workTHEIR WORKJohn A.Karagiannis34works
Life Sciences10%Health Sciences52%

Their six largest subfields, inside their fields and domains; the grey slice is everything else they publish. The interactive view splits every one of their works down to single topics.

The fields and subfields, with their numbers
    1. Medicine1851.6%
  2. Everything else1337.9%
    1. Biochemistry, Genetics and Molecular Biology410.5%
  1. 1Surgery16% of their works
  2. 2Oncology13% of their works
  3. 3Pulmonary and Respiratory Medicine10% of their works
  4. 4Genetics10% of their works
  5. 5Epidemiology7% of their works
  6. 6Gastroenterology5% of their works

Research topics

Which keywords describe John A. Karagiannis's research?

The keywords of their largest research topics: Prevention, Inflammatory Bowel Disease, Pathogenesis, Gastric Cancer, Colorectal Cancer, Screening, Crohn's Disease and Ulcerative Colitis.

Size is their works in the topics tagged with each word, from their 8 largest topics. Each links to the topic it comes from most. The words come from the keyword list OpenAlex gives each topic, not from the text of the papers, so a word can appear that none of the papers uses.

All 20 words, with their numbers
  1. Prevention142 topics
  2. Inflammatory Bowel Disease132 topics
  3. Pathogenesis132 topics
  4. Gastric Cancer112 topics
  5. Colorectal Cancer91 topic
  6. Screening91 topic
  7. Crohn's Disease81 topic
  8. Ulcerative Colitis81 topic
  9. Chemotherapy61 topic
  10. Endoscopic Resection61 topic
  11. Collagenous Colitis51 topic
  12. Helicobacter pylori51 topic
  13. Inflammation51 topic
  14. Microscopic Colitis51 topic
  15. Celiac Disease31 topic
  16. Computed Tomography31 topic
  17. Endoscopic Stenting31 topic
  18. Esophageal Perforation31 topic
  19. Gluten Sensitivity31 topic
  20. Radiation Exposure31 topic

Where does John A. Karagiannis work?

John A. Karagiannis's main affiliation in the publication record is Agia Olga Hospital, Greece.

How many publications and citations does John A. Karagiannis have?

OpenAlex counts 34 works and 2,930 citations for John A. Karagiannis, an h-index of 15, ranking #2,070,719 of 7,710,434 researchers worldwide on the quality score.

Ranked on field-normalised citation excellence (50%), output (30%) and citations (20%). Counts come from OpenAlex author records, which occasionally merge different people who share a name or split one person into several.

Papers, co-authors, who cited this work and researchers on the nearest topics have tabs of their own, above. Is this your page? Claim it with your ORCID iD, or request a correction or removal.

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