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Government institution · Kalutara · Sri Lanka

National Institute of Health Sciences

In research, National Institute of Health Sciences stands highest in Health Sciences (#9,117 of 11,982 worldwide), 2022–2025.

nihs.gov.lkROR OpenAlex
World rank, 2022–2025
#16,429
of 28,054 · #18,218 all time
Rank in Sri Lanka
#21
of 37
Research works
794
▲ 4% vs 2013–17
Citations
12k
14.9 per fractional work
Top-10% rate
4.6%
record average 16.5%
Open access
60%
world 28%

What is National Institute of Health Sciences 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 #9,117 of 11,982 3.3%60 #14716

Each strip is that field’s whole ranked pool, with the notch where National Institute of Health Sciences 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).

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: 1.37× its world share, 7 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 2.59× its world share, 15 worksBiochemistry, Geneti…Immunology and Microbiology: 1.76× its world share, 2 worksImmunology and Micro…Neuroscience: 1.30× its world share, 2 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 1.20× its world share, 0 worksPharmacology, Toxico…Chemical Engineering: 0.86× its world share, 0 worksChemical EngineeringChemistry: 0.52× its world share, 1 worksChemistryComputer Science: 0.21× its world share, 2 worksComputer ScienceEnergy: 0.10× its world share, 0 worksEnergyEngineering: 0.27× its world share, 4 worksEngineeringEnvironmental Science: 0.96× its world share, 5 worksEnvironmental ScienceMaterials Science: 0.16× its world share, 1 worksMaterials ScienceMathematics: 0.13× its world share, 0 worksMathematicsPhysics and Astronomy: 0.13× its world share, 0 worksPhysics and AstronomyDentistry: 4.06× its world share, 2 worksDentistryHealth Professions: 2.32× its world share, 7 worksHealth ProfessionsMedicine: 2.25× its world share, 48 worksMedicineNursing: 2.91× its world share, 2 worksNursingVeterinary: 8.22× its world share, 1 worksVeterinaryArts and Humanities: 0.13× its world share, 0 worksArts and HumanitiesBusiness, Management and Accounting: 0.12× its world share, 0 worksBusiness, Management…Economics, Econometrics and Finance: 0.18× its world share, 0 worksEconomics, Econometr…Psychology: 1.08× its world share, 4 worksPsychologySocial Sciences: 0.35× its world share, 5 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Veterinary, 8.2×. Every wedge is a field page.

Who are the top researchers at National Institute of Health Sciences?

Ranked on the composite score, Hiroshi Tokunaga, Yukari Tsumura and Sumiko Tsuji lead among researchers whose main affiliation is National Institute of Health Sciences.

  1. 1 Hiroshi Tokunaga Sri Lanka · #833,361 worldwide 18 citations · 27 works
  2. 2 Yukari Tsumura Sri Lanka · #1,246,647 worldwide 13 citations · 17 works
  3. 3 Sumiko Tsuji Sri Lanka · #1,348,992 worldwide 9 citations · 15 works
  4. 4 Tadashi SHIBATA Sri Lanka · #1,373,776 worldwide 13 citations · 36 works
All ranked researchers at National Institute of Health Sciences

Which keywords describe research at National Institute of Health Sciences?

By fractional works in 2022–2025, weighted toward what it does more of than the world: Epidemiology, Prevention, Food Safety, Risk Assessment, Health Effects, DNA Damage, Patient Satisfaction and Risk Factors.

▲ 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. Epidemiology9▲ 2.1×53 topics
  2. Prevention4▲ 9.6×11 topics
  3. Risk Assessment4▲ 5.8×5 topics
  4. Inflammation4▲ 1.84×22 topics
  5. Health Effects4▲ 6.2×10 topics
  6. Food Safety4▲ 13×8 topics
  7. Risk Factors4▲ 3.3×12 topics
  8. Oxidative Stress4▲ 2.1×21 topics
  9. COVID-194▲ 2.4×15 topics
  10. Cancer4▲ 2.4×19 topics
  11. Mental Health3▲ 2.1×13 topics
  12. Cardiovascular Disease3▲ 2.5×21 topics
  13. Public Health3▲ 1.93×18 topics
  14. Chemotherapy3▲ 3.9×11 topics
  15. DNA Damage3▲ 34×3 topics
  16. Guidelines3▲ 5.8×8 topics
  17. Mortality3▲ 4.7×7 topics
  18. Healthcare3▲ 2.3×8 topics
  19. Pandemic3▲ 2.5×8 topics
  20. Patient Satisfaction3▲ 8.4×6 topics
  21. Clinical Trials3▲ 3.6×12 topics
  22. Metabolic Syndrome2▲ 2.8×15 topics
  23. Biomonitoring2▲ 28×3 topics
  24. Environmental Monitoring2▲ 5.6×2 topics
  25. Clinical Practice Guidelines2▲ 3.6×9 topics
  26. Colorectal Cancer2▲ 25×1 topic
  27. Comet Assay2▲ 124×1 topic
  28. Genotoxicity Testing2▲ 124×1 topic
  29. Screening2▲ 21×1 topic
  30. Healthcare Access2▲ 6.5×3 topics
  31. Toxicology2▲ 11×3 topics
  32. Vaccine2▲ 4.5×8 topics
  33. Neurotoxicity2▲ 13×2 topics
  34. Chronic Disease Management2▲ 7.3×3 topics
  35. Gastric Cancer2▲ 13×2 topics
  36. Molecular Characterization2▲ 8.1×4 topics
  37. Volatile Organic Compounds2▲ 14×3 topics
  38. Ischemic Stroke2▲ 8.8×4 topics
  39. Genome Engineering1▲ 20×1 topic
  40. Microfluidic Devices1▲ 11×2 topics

Which research topics does National Institute of Health Sciences publish most on?

By volume in 2022–2025: Carcinogens and Genotoxicity Assessment, Colorectal Cancer Screening and Detection, CRISPR and Genetic Engineering and Telemedicine and Telehealth Implementation.

Carcinogens and Genotoxicity Assessment: 2 fractional worksColorectal Cancer Screening and Detection: 2 fractional worksCRISPR and Genetic Engineering: 1 fractional worksTelemedicine and Telehealth Implementation: 1 fractional worksEsophageal and GI Pathology: 1 fractional works3D Printing in Biomedical Research: 1 fractional worksAnimal testing and alter…1Animal testing and alternatives: 1 fractional worksIndoor Air Quality and Microbial Exposure: 1 fractional worksSARS-CoV-2 and COVID-19 Research: 1 fractional worksNeuroscience and Neural …1Neuroscience and Neural Engineering: 1 fractional works
Cancer ResearchOncologyMolecular BiologyPublic Health, Environmental and Occupational Health6 others

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

  1. 1 Carcinogens and Genotoxicity Assessment Cancer Research 2 works
  2. 2 Colorectal Cancer Screening and Detection Oncology 2 works
  3. 3 CRISPR and Genetic Engineering Molecular Biology 1 works
  4. 4 Telemedicine and Telehealth Implementation Public Health, Environmental and Occupational Health 1 works
  5. 5 Esophageal and GI Pathology Surgery 1 works
  6. 6 3D Printing in Biomedical Research Biomedical Engineering 1 works
  7. 7 Animal testing and alternatives Small Animals 1 works
  8. 8 Indoor Air Quality and Microbial Exposure Health, Toxicology and Mutagenesis 1 works
  9. 9 SARS-CoV-2 and COVID-19 Research Infectious Diseases 1 works
  10. 10 Neuroscience and Neural Engineering Cellular and Molecular Neuroscience 1 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 available59.6%not open40.4%

World: 28% of research is openly available.

with international co-authors46.2%domestic only53.8%

World: 19% is written across borders.

How has National Institute of Health Sciences's research output changed?

Output in 2018–2022 was 4% 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 Kalutara

All research institutions in Kalutara

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.