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Government institution · Nuku'alofa · Tonga

Ministry of Health

In research, Ministry of Health stands highest in Health Sciences (#10,321 of 11,982 worldwide), 2022–2025.

health.gov.toROR OpenAlex
World rank, 2022–2025
#23,368
of 28,054 · #33,061 all time
Research works
298
▲ 135% vs 2013–17
Citations
3.9k
12.9 per fractional work
Top-10% rate
6.6%
record average 16.5%
Open access
50%
world 28%

What is Ministry of Health 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 #10,321 of 11,982 3.8%61 #15526

Each strip is that field’s whole ranked pool, with the notch where Ministry of Health 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: 0.36× its world share, 2 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 1.11× its world share, 5 worksBiochemistry, Geneti…Immunology and Microbiology: 3.35× its world share, 3 worksImmunology and Micro…Neuroscience: 1.01× its world share, 1 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 0.27× its world share, 0 worksPharmacology, Toxico…Chemical Engineering: 0.27× its world share, 0 worksChemical EngineeringChemistry: 0.18× its world share, 0 worksChemistryComputer Science: 0.13× its world share, 1 worksComputer ScienceEarth and Planetary Sciences: 0.16× its world share, 0 worksEarth and Planetary …Engineering: 0.16× its world share, 2 worksEngineeringEnvironmental Science: 0.33× its world share, 2 worksEnvironmental ScienceMaterials Science: 0.43× its world share, 1 worksMaterials ScienceMathematics: 0.16× its world share, 0 worksMathematicsPhysics and Astronomy: 0.03× its world share, 0 worksPhysics and AstronomyDentistry: 10.31× its world share, 4 worksDentistryHealth Professions: 1.83× its world share, 4 worksHealth ProfessionsMedicine: 2.95× its world share, 50 worksMedicineNursing: 4.02× its world share, 2 worksNursingVeterinary: 1.39× its world share, 0 worksVeterinaryArts and Humanities: 0.66× its world share, 2 worksArts and HumanitiesBusiness, Management and Accounting: 0.34× its world share, 1 worksBusiness, Management…Decision Sciences: 0.15× its world share, 0 worksDecision SciencesEconomics, Econometrics and Finance: 0.24× its world share, 0 worksEconomics, Econometr…Psychology: 0.92× its world share, 2 worksPsychologySocial Sciences: 0.36× its world share, 4 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Dentistry, 10.3×. Every wedge is a field page.

Who are the top researchers at Ministry of Health?

Ranked on the composite score, Kovalchuk lead among researchers whose main affiliation is Ministry of Health.

  1. 1 Kovalchuk Tonga · #1,599,455 worldwide 2 citations · 16 works
All ranked researchers at Ministry of Health

Which keywords describe research at Ministry of Health?

By fractional works in 2022–2025, weighted toward what it does more of than the world: Epidemiology, Public Health, Risk Factors, Prevention, Non-Communicable Diseases, Inflammation, Occupational Health and Pathogenesis.

▲ 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. Epidemiology11▲ 3.1×62 topics
  2. Public Health6▲ 4.5×20 topics
  3. Inflammation5▲ 2.8×22 topics
  4. Risk Factors5▲ 5.3×17 topics
  5. Prevention4▲ 9.9×11 topics
  6. Non-Communicable Diseases3▲ 13×4 topics
  7. Cardiovascular Disease3▲ 2.9×13 topics
  8. Pathogenesis3▲ 6.0×16 topics
  9. Quality of Life3▲ 2.1×20 topics
  10. Occupational Health2▲ 24×3 topics
  11. Cancer2▲ 1.98×10 topics
  12. Cardiovascular Diseases2▲ 28×1 topic
  13. Epidemiological Studies2▲ 19×2 topics
  14. Mortality Trends2▲ 62×1 topic
  15. Wound Healing2▲ 10×9 topics
  16. Clinical Trials2▲ 3.6×8 topics
  17. Diagnosis2▲ 2.6×22 topics
  18. Metabolic Syndrome2▲ 2.9×8 topics
  19. Diabetes2▲ 3.9×8 topics
  20. Heart Failure2▲ 4.4×9 topics
  21. Echocardiography2▲ 6.6×7 topics
  22. Vaccine2▲ 4.5×9 topics
  23. Glaucoma2▲ 11×3 topics
  24. Macular Degeneration1▲ 12×3 topics
  25. Myocardial Infarction1▲ 6.2×2 topics
  26. Myopia1▲ 25×2 topics
  27. Dental Materials1▲ 25×1 topic
  28. Diabetic Retinopathy1▲ 14×2 topics
  29. Global Burden of Disease1▲ 5.7×3 topics
  30. Intravitreal Injection1▲ 20×2 topics
  31. Macular Hole1▲ 65×1 topic
  32. Restorative Dentistry1▲ 25×1 topic
  33. Vascular Endothelial Growth Factor1▲ 17×2 topics
  34. Vitreoretinal Surgery1▲ 65×1 topic
  35. Choroidal Thickness1▲ 23×1 topic
  36. Femtosecond Laser1▲ 25×2 topics
  37. Immune Regulation1▲ 11×4 topics
  38. Retinal Pigment Epithelium1▲ 23×1 topic
  39. COVID-19 Vaccine1▲ 16×2 topics
  40. Cell Proliferation1▲ 13×2 topics

Which research topics does Ministry of Health publish most on?

By volume in 2022–2025: Healthcare Systems and Public Health, Retinal and Macular Surgery, Dental materials and restorations and Retinal Diseases and Treatments.

Healthcare Systems and P…2Healthcare Systems and Public Health: 2 fractional worksRetinal and Macular Surgery: 1 fractional worksDental materials and res…1Dental materials and restorations: 1 fractional worksRetinal Diseases and Tre…1Retinal Diseases and Treatments: 1 fractional worksVaccine Coverage and Hesitancy: 1 fractional worksCardiac Structural Anomalies and Repair: 1 fractional worksIntraocular Surgery and …1Intraocular Surgery and Lenses: 1 fractional worksChild Nutrition and Wate…1Child Nutrition and Water Access: 1 fractional worksLaser Applications in De…1Laser Applications in Dentistry and Medicine: 1 fractional worksPneumonia and Respirator…1Pneumonia and Respiratory Infections: 1 fractional works
EpidemiologyRadiology, Nuclear Medicine and ImagingOrthodonticsOphthalmology3 others

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

  1. 1 Healthcare Systems and Public Health Epidemiology 2 works
  2. 2 Retinal and Macular Surgery Radiology, Nuclear Medicine and Imaging 1 works
  3. 3 Dental materials and restorations Orthodontics 1 works
  4. 4 Retinal Diseases and Treatments Ophthalmology 1 works
  5. 5 Vaccine Coverage and Hesitancy Health 1 works
  6. 6 Cardiac Structural Anomalies and Repair Surgery 1 works
  7. 7 Intraocular Surgery and Lenses Ophthalmology 1 works
  8. 8 Child Nutrition and Water Access Nutrition and Dietetics 1 works
  9. 9 Laser Applications in Dentistry and Medicine Radiology, Nuclear Medicine and Imaging 1 works
  10. 10 Pneumonia and Respiratory Infections Epidemiology 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 available50.0%not open50.0%

World: 28% of research is openly available.

with international co-authors65.5%domestic only34.5%

World: 19% is written across borders.

How has Ministry of Health's research output changed?

Output in 2018–2022 was 135% 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 Nuku'alofa

All research institutions in Nuku'alofa

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.