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Researcher · University of Ulster · United Kingdom

John S. A. Collins

John S. A. Collins publishes mostly in Surgery, Gastroenterology and Epidemiology, on topics such as Helicobacter pylori-related gastroenterology studies, Gastroesophageal reflux and treatments and Esophageal and GI Pathology.

OpenAlex
World rank
#5,466,655
of 7,710,434 ranked researchers
Rank in United Kingdom
#319,226
of 367,258
Works
39
Citations
400
Citations per work
10.3
h-index
9
i10-index 9Top 55% in Surgery
John S. A. Collins

What does John S. A. Collins research?

John S. A. Collins's work is mostly in Medicine (82%).

Health Sciences: 32 works · 81.7% of their workMedicine: 32 works · 81.7% of their workSurgery: 15 works · 39.4% of their workGastroenterology: 6 works · 15.5% of their workEpidemiology: 4 works · 9.9% of their workPulmonary and Respiratory Medicine: 4 works · 9.9% of their workOncology: 2 works · 4.2% of their workEndocrinology, Diabetes and Metabolism: 1 works · 2.8% of their workEverything else: 7 works · 18.3% of their workTHEIR WORKJohn S. A.Collins39works
Health Sciences82%

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. Medicine3281.7%
  2. Everything else718.3%
  1. 1Surgery39% of their works
  2. 2Gastroenterology16% of their works
  3. 3Epidemiology10% of their works
  4. 4Pulmonary and Respiratory Medicine10% of their works
  5. 5Oncology4% of their works
  6. 6Endocrinology, Diabetes and Metabolism3% of their works

Research topics

Which keywords describe John S. A. Collins's research?

The keywords of their largest research topics: Epidemiology, Proton Pump Inhibitors, Gastric Cancer, Helicobacter pylori, Esophageal Motility Disorders, Gastroesophageal Reflux Disease, Endoscopic Stenting and Esophageal Perforation.

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.

All 18 words, with their numbers
  1. Epidemiology143 topics
  2. Proton Pump Inhibitors102 topics
  3. Gastric Cancer91 topic
  4. Helicobacter pylori91 topic
  5. Esophageal Motility Disorders71 topic
  6. Gastroesophageal Reflux Disease71 topic
  7. Endoscopic Stenting61 topic
  8. Esophageal Perforation61 topic
  9. Diagnosis41 topic
  10. Eosinophilic Esophagitis41 topic
  11. Neuroendocrine Tumors41 topic
  12. Pancreatic Neuroendocrine Tumors41 topic
  13. Cholecystitis31 topic
  14. Collagenous Colitis31 topic
  15. ERCP31 topic
  16. Esophageal Carcinoma31 topic
  17. Microscopic Colitis31 topic
  18. Preoperative Chemoradiotherapy31 topic

Where does John S. A. Collins work?

John S. A. Collins's main affiliation in the publication record is University of Ulster, United Kingdom.

How many publications and citations does John S. A. Collins have?

OpenAlex counts 39 works and 400 citations for John S. A. Collins, an h-index of 9, ranking #5,466,655 of 7,710,434 researchers worldwide on the quality score.

Ranked on field-normalised 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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