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Hospital / health system · Colombo · Sri Lanka

National Hospital of Sri Lanka

In research, National Hospital of Sri Lanka stands highest in Health Sciences (#5,116 of 11,982 worldwide), Medicine (#4,800 of 10,443 worldwide) and Surgery (#1,808 of 1,816 worldwide), 2022–2025. Relative to its size it is most specialised in Neurology and Endocrinology, Diabetes and Metabolism — Neurology is 8.7× its share of world research.

nhsl.health.gov.lkROR OpenAlex
World rank, 2022–2025
#14,688
of 28,054 · #21,766 all time
Rank in Sri Lanka
#20
of 37
Research works
1.7k
▲ 79% vs 2013–17
Citations
9.9k
5.7 per fractional work
Top-10% rate
3.9%
record average 16.5%
Open access
77%
world 28%

What is National Hospital of Sri Lanka known for in research?

The fields where it stands highest, 2022–2025, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorksAll time
Health SciencesDomain #5,116 of 11,982 2.9%404 #7724
MedicineField #4,800 of 10,443 2.8%368 #6554
SurgerySubfield #1,808 of 1,816 0.5%64 #4003

Each strip is that field’s whole ranked pool, with the notch where National Hospital of Sri Lanka sits in it, in the colour of the band that rank falls in. The track under the rate is the rate itself: it carries no world mark, because the world rate differs by field (from about 6% to 21% in this record).

Which of those standings moved

The same fields on both windows: where it stood over the whole record, and where it stands in 2022–2025. The distance is the story, and it is the one thing the two rank columns above cannot show.

  1. Health Sciences#7,724 #5,116
  2. Medicine#6,554 #4,800
  3. Surgery#4,003 #1,808
all time2022–2025, better2022–2025, worse

A dot further right is a better standing. Fields it was not ranked in over the whole record are left out.

What does National Hospital of Sri Lanka specialise in?

Where its research is concentrated relative to its size: Neurology takes 8.7× the share of its output that it takes of world research.

  1. NeurologySubfield · 25.3 works8.7×
  2. Endocrinology, Diabetes and MetabolismSubfield · 22.3 works8.1×
← less than its size predicts1×more →

Location quotient, a volume reading rather than an impact one. It surfaces small, lopsided specialities.

Field profile

Location quotient across every field it publishes in: outside the ring is more than an institution of this size would be expected to publish, inside it is less.

Agricultural and Biological Sciences: 0.20× its world share, 5 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 1.02× its world share, 28 worksBiochemistry, Geneti…Immunology and Microbiology: 1.75× its world share, 9 worksImmunology and Micro…Neuroscience: 0.81× its world share, 7 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 0.61× its world share, 1 worksPharmacology, Toxico…Chemical Engineering: 0.04× its world share, 0 worksChemical EngineeringChemistry: 0.18× its world share, 1 worksChemistryComputer Science: 0.12× its world share, 5 worksComputer ScienceEarth and Planetary Sciences: 0.09× its world share, 1 worksEarth and Planetary …Energy: 0.20× its world share, 1 worksEnergyEngineering: 0.10× its world share, 8 worksEngineeringEnvironmental Science: 0.20× its world share, 5 worksEnvironmental ScienceMaterials Science: 0.06× its world share, 1 worksMaterials ScienceMathematics: 0.09× its world share, 0 worksMathematicsDentistry: 3.36× its world share, 8 worksDentistryHealth Professions: 1.68× its world share, 23 worksHealth ProfessionsMedicine: 3.75× its world share, 368 worksMedicineNursing: 1.61× its world share, 4 worksNursingVeterinary: 1.59× its world share, 1 worksVeterinaryArts and Humanities: 0.15× its world share, 2 worksArts and HumanitiesBusiness, Management and Accounting: 0.30× its world share, 5 worksBusiness, Management…Decision Sciences: 0.38× its world share, 2 worksDecision SciencesEconomics, Econometrics and Finance: 0.57× its world share, 6 worksEconomics, Econometr…Psychology: 0.58× its world share, 9 worksPsychologySocial Sciences: 0.16× its world share, 11 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Medicine, 3.8×. Every wedge is a field page.

Who are the top researchers at National Hospital of Sri Lanka?

Ranked on the composite score, Irosha Perera, Noel Somasundaram and Bimsara Senanayake lead among researchers whose main affiliation is National Hospital of Sri Lanka.

  1. 1 Irosha Perera Sri Lanka · #750,884 worldwide 23 citations · 17 works
  2. 2 Noel Somasundaram Sri Lanka · #1,233,681 worldwide 21 citations · 33 works
  3. 3 Bimsara Senanayake Sri Lanka · #1,333,258 worldwide 8 citations · 22 works
  4. 4 Manilka Sumanatilleke Sri Lanka · #1,576,588 worldwide 3 citations · 17 works
All ranked researchers at National Hospital of Sri Lanka

Which keywords describe research at National Hospital of Sri Lanka?

By fractional works in 2022–2025, weighted toward what it does more of than the world: Epidemiology, Diagnosis, Treatment, Pathogenesis, Surgical Management, Neurological Disorders, Management and Complications.

▲ more of its work than of the world’s◆ about the world’s share▼ less than the world’s

Size is fractional works in 2022–2025 in the topics tagged with each word; colour is the word's share of this institution's work against its share of the world's. The 40 words are chosen for being large and distinctive. Each links to the topic it comes from most.

All 40 words, with their numbers
  1. Epidemiology77▲ 3.8×106 topics
  2. Treatment39▲ 6.2×42 topics
  3. Diagnosis38▲ 8.0×36 topics
  4. Inflammation22▲ 2.1×48 topics
  5. Quality of Life19▲ 2.6×33 topics
  6. Pathogenesis18▲ 7.0×20 topics
  7. Management18▲ 4.5×25 topics
  8. Risk Factors17▲ 3.1×26 topics
  9. Neurological Disorders16▲ 5.7×15 topics
  10. Surgical Management16▲ 7.6×16 topics
  11. Complications16▲ 6.1×14 topics
  12. Clinical Practice Guidelines15▲ 5.3×12 topics
  13. Genetic Mutations15▲ 6.7×20 topics
  14. Public Health14▲ 1.92×31 topics
  15. Cardiovascular Disease14▲ 2.4×31 topics
  16. Immunotherapy14▲ 3.8×15 topics
  17. Vaccine Development14▲ 10×8 topics
  18. Radiotherapy13▲ 6.7×13 topics
  19. Metabolic Syndrome12▲ 2.9×18 topics
  20. Prognosis12▲ 7.1×9 topics
  21. Immune Response11▲ 3.7×14 topics
  22. Chemotherapy11▲ 3.0×18 topics
  23. Imaging11▲ 8.3×5 topics
  24. Autoantibodies10▲ 8.4×8 topics
  25. Diabetes10▲ 4.0×13 topics
  26. Genetics10▲ 2.8×14 topics
  27. Diagnostic Imaging10▲ 17×4 topics
  28. Cognitive Impairment10▲ 7.5×7 topics
  29. Surgery9▲ 5.1×10 topics
  30. Diagnostic Criteria9▲ 7.6×7 topics
  31. Vaccine8▲ 4.0×10 topics
  32. Drug Resistance8▲ 5.4×7 topics
  33. Neoadjuvant Therapy7▲ 5.9×5 topics
  34. Epilepsy7▲ 12×3 topics
  35. Clinical Management7▲ 7.5×8 topics
  36. Stroke6▲ 7.0×7 topics
  37. Seizures6▲ 20×2 topics
  38. Virulence6▲ 19×3 topics
  39. Neurological Complications6▲ 18×4 topics
  40. Endoscopic Surgery6▲ 12×3 topics

Which research topics does National Hospital of Sri Lanka publish most on?

By volume in 2022–2025: Peripheral Neuropathies and Disorders, Infectious Diseases and Tuberculosis, Epilepsy research and treatment and Pituitary Gland Disorders and Treatments.

Peripheral Neuropathies …5Peripheral Neuropathies and Disorders: 5 fractional worksInfectious Diseases and …4Infectious Diseases and Tuberculosis: 4 fractional worksEpilepsy research and treatment: 4 fractional worksPituitary Gland Disorders and Treatments: 4 fractional worksGastrointestinal disorders and treatments: 4 fractional worksLeptospirosis research and findings: 4 fractional worksPancreatitis Pathology and Treatment: 4 fractional worksGallbladder and Bile Duc…4Gallbladder and Bile Duct Disorders: 4 fractional worksMosquito-borne diseases and control: 4 fractional worksLong-Term Effects of COVID-19: 3 fractional works
NeurologySurgeryPsychiatry and Mental healthEndocrinology, Diabetes and Metabolism3 others

Area is fractional works; colour is the subfield each topic belongs to.

  1. 1 Peripheral Neuropathies and Disorders Neurology 5 works
  2. 2 Infectious Diseases and Tuberculosis Surgery 4 works
  3. 3 Epilepsy research and treatment Psychiatry and Mental health 4 works
  4. 4 Pituitary Gland Disorders and Treatments Endocrinology, Diabetes and Metabolism 4 works
  5. 5 Gastrointestinal disorders and treatments Surgery 4 works
  6. 6 Leptospirosis research and findings Parasitology 4 works
  7. 7 Pancreatitis Pathology and Treatment Surgery 4 works
  8. 8 Gallbladder and Bile Duct Disorders Pulmonary and Respiratory Medicine 4 works
  9. 9 Mosquito-borne diseases and control Public Health, Environmental and Occupational Health 4 works
  10. 10 Long-Term Effects of COVID-19 Neurology 3 works

How open and international is its research?

Against the world’s own shares — the tick on each track. Both are shares of its output, so they sit on one scale and can be read against each other as well as against the world.

openly available77.4%not open22.6%

World: 28% of research is openly available.

with international co-authors11.8%domestic only88.2%

World: 19% is written across borders.

How has National Hospital of Sri Lanka's research output changed?

Output in 2018–2022 was 79% higher than in 2013–2017.

1990200020102020
grewheldshrank

The same series as a ribbon — one cell per year, darker for more. The line above answers how much; this answers when.

Other research institutions in Colombo

All research institutions in Colombo

Research measures only: rankings here say nothing about teaching, admissions or student experience. Comparable institutions and collaboration partners are in the interactive view on the map.