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Central African Republic vs Chad

On research quality in 2022-now, Chad ranks #168 in the world and the Central African Republic #181, of 189 countries.

Research profiles alike: 0.80very similar shapes of research, whatever their size. How it is measured

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Central African Republic

World rank, 2022-now
#181
#194 all time
Works, 2022-now
263
fractional
Top-10% rate
5.0%
share of its work among the world's most cited
Open access
70%
of its works free to read

Strongest relative focus: Virology, Infectious Diseases, Endocrinology.

Chad

World rank, 2022-now
#168
#171 all time
Works, 2022-now
545
fractional
Top-10% rate
4.2%
share of its work among the world's most cited
Open access
79%
of its works free to read

Strongest relative focus: Forestry, Ecology, Evolution, Behavior and Systematics, Geochemistry and Petrology.

Who leads, measure by measure?

Chad leads on 5 of 9 measures: research quality, output, open access, international co-authorship and growth. The Central African Republic leads on 3 of 9 measures: excellence for its fields, top-10% rate and citations per work. The two are level on institutions in the world top 100.

Central African Republic 31 level5 Chad
  1. #181Research qualityworld rank of 189 countries, 2022-now#168
  2. 0.87×Excellence for its fieldsits top-10% rate against what its topics predict; 1.00× is as expected0.75×
  3. 263Outputfractional works, 2022-now545
  4. 5.0%Top-10% rateshare of its works among the world's most cited4.2%
  5. 8.7Citations per workall time, per fractional work4.6
  6. 0World top 100institutions it holds among the world's best 1000
  7. 70%Open accessof its works free to read, all time79%
  8. 36%Internationalof its works written with co-authors abroad, all time47%
  9. +75%Growthworks in 2022-25 against 2018-21; half a bar is no change+104%

A rank is drawn as its standing: the longer the bar, the nearer the top. Anything else is drawn against the larger of the two, and two values a hair apart are called level. Quality, excellence and the top-10% rate are explained in the methodology.

What is each known for?

The keywords that describe each side's research, by fractional works in 2022-now and weighted toward what it does more of than the world.

Central African Republic

▲ more of its work than of the world's◆ about the world's share▼ less than the world's
All 40 words, with their numbers
  1. Epidemiology51▲ 4.3×71 topics
  2. Vaccine18▲ 15×10 topics
  3. Immune Response17▲ 10×12 topics
  4. Pathogenesis16▲ 10×15 topics
  5. Diagnosis14▲ 5.2×20 topics
  6. Treatment12▲ 3.3×17 topics
  7. Public Health12▲ 2.6×31 topics
  8. Climate Change10▲ 1.27×35 topics
  9. Globalization9▲ 1.52×17 topics
  10. Genetic Diversity9▲ 6.6×10 topics
  11. Risk Factors8▲ 2.4×16 topics
  12. Antiretroviral Therapy8▲ 15×6 topics
  13. Drug Resistance8▲ 8.7×6 topics
  14. Global Burden7▲ 4.2×10 topics
  15. Antibiotic Resistance6▲ 5.3×9 topics
  16. Vaccine Development6▲ 8.1×7 topics
  17. Maternal Mortality6▲ 8.5×4 topics
  18. Viral Transmission6▲ 14×3 topics
  19. Immunity5▲ 4.4×3 topics
  20. SARS-CoV-25▲ 5.7×5 topics
  21. Infectious Diseases5▲ 4.8×7 topics
  22. Zoonotic Transmission5▲ 22×4 topics
  23. Respiratory Infections5▲ 14×3 topics
  24. Risk Perception5▲ 5.7×5 topics
  25. Virulence Factors5▲ 11×5 topics
  26. Transmission4▲ 27×2 topics
  27. HIV4▲ 18×4 topics
  28. Antimicrobial Resistance4▲ 7.0×5 topics
  29. Community Health Workers4▲ 16×2 topics
  30. Mortality Rates4▲ 15×2 topics
  31. Vaccination4▲ 18×2 topics
  32. ACE2 Receptor4▲ 6.1×2 topics
  33. Health Inequalities4▲ 11×2 topics
  34. Toxins4▲ 13×5 topics
  35. Child Mortality4▲ 19×1 topic
  36. HIV Transmission4▲ 17×2 topics
  37. Health Systems4▲ 19×1 topic
  38. Viral Load4▲ 17×2 topics
  39. Preexposure Prophylaxis4▲ 25×1 topic
  40. Stigma and Discrimination4▲ 25×1 topic

Chad

▲ more of its work than of the world's◆ about the world's share▼ less than the world's
All 40 words, with their numbers
  1. Epidemiology62▲ 2.3×83 topics
  2. Climate Change50▲ 2.8×47 topics
  3. Sustainability43▲ 2.6×36 topics
  4. Smallholder Farmers39▲ 28×6 topics
  5. Adaptation31▲ 16×5 topics
  6. Diversity26▲ 22×4 topics
  7. Livestock Farming26▲ 65×2 topics
  8. Agroecology26▲ 27×2 topics
  9. Agricultural Development25▲ 25×2 topics
  10. Multifunctionality25▲ 81×1 topic
  11. Work Organization25▲ 97×1 topic
  12. Renewable Energy20▲ 2.0×22 topics
  13. Immune Response19▲ 5.0×13 topics
  14. Public Health19▲ 1.92×34 topics
  15. Treatment19▲ 2.3×27 topics
  16. Genetic Diversity19▲ 6.4×15 topics
  17. Sustainable Agriculture18▲ 8.5×9 topics
  18. Remote Sensing17▲ 2.1×15 topics
  19. Antioxidant16▲ 3.5×26 topics
  20. Nutritional Value15▲ 20×2 topics
  21. Climate Resilience15▲ 38×3 topics
  22. Diabetes15▲ 4.4×11 topics
  23. Global Burden15▲ 4.1×12 topics
  24. Biodiversity Conservation14▲ 5.4×8 topics
  25. Governance13▲ 5.9×7 topics
  26. Agroforestry12▲ 27×4 topics
  27. Health Benefits12▲ 5.3×10 topics
  28. Indigenous Fruits12▲ 77×1 topic
  29. Tree Domestication12▲ 77×1 topic
  30. Vaccine12▲ 4.3×9 topics
  31. Global Burden of Disease10▲ 6.3×2 topics
  32. Maternal Mortality10▲ 6.9×5 topics
  33. Maternal and Child Undernutrition10▲ 19×1 topic
  34. Water Sanitation Hygiene10▲ 19×1 topic
  35. GIS10▲ 19×3 topics
  36. Antiviral Therapy9▲ 14×3 topics
  37. Antiretroviral Therapy9▲ 7.9×6 topics
  38. Community Health Workers9▲ 14×2 topics
  39. Institutional Quality9▲ 12×2 topics
  40. Liver Disease8▲ 14×2 topics

Size is fractional works in the topics tagged with each word; colour is the word's share of the side's work against its share of the world's. Each word links to the topic it comes from most.

How has their output grown?

Chad has out-published the Central African Republic every year since 2015, when it overtook it.

still counting100200300Chad151 in 2025Central African Republic56 in 20251990200020102020

Fractional works per year.

Their share of all research

Growing output can still be a shrinking share, because all of science grows. Each line is a side as a percentage of every work published that year.

still counting0.0050%0.010%Chad0.0026% in 2025Central African Republic0.00096% in 202519801990200020102020

Fractional works over all fractional works that year. How the balance of science has shifted.

How much of it reaches the world top 10%

The share of each side's works, year by year, that reached the world's 10% most cited for their field and year. The average of all institutions is 10.0% (why not 10%).

still counting5%10%Central African Republic4.0% in 2025Chad3.9% in 202520102020

A year with under 1% of the side's peak output is left out: a rate over a handful of papers says nothing. The latest years are still being cited.

Who holds more of the world's best institutions?

A country's average quality and the number of institutions it holds at the very top can disagree, and both are worth knowing. The counts are nested: an institution in the top 50 is also in the top 100.

Central African Republic 05 level0 Chad
  1. 0In the world top 500
  2. 0In the top 1000
  3. 0In the top 5000
  4. 0In the top 1,0000
  5. #51Elite capacityrank among 204 countries#51

Institutions ranked on research quality, 2022-now. Elite capacity counts a country's institutions by their worldwide rank, weighted so a place at #1 counts for more than one at #480.

Which publishes more research, Central African Republic or Chad?

Chad publishes 2.1× as much research as the Central African Republic in 2022-now (545 against 263 fractional works).

Whose research has more impact, Central African Republic or Chad?

5.0% of the Central African Republic's research reaches the world's top 10% most cited, against 4.2% for Chad.

Is Central African Republic or Chad growing faster?

Output in 2022-25 was +104% against 2018-21 for Chad, and +75% for the Central African Republic.

Which has more open access research, Central African Republic or Chad?

79% of Chad's research is free to read, against 70% of the Central African Republic's.

Which has more world-class institutions, Central African Republic or Chad?

The Central African Republic holds 0 of the world's top 100 research institutions and Chad 0; in the top 1,000 it is 0 against 0.

Which institutions lead in each country?

The highest-ranked institutions on each side on research quality, 2022-now. The percentage is each institution's own top-10% rate: the share of its works that are among the world's 10% most cited for their field and year. Every figure stands alone, so they do not add up to 100%.

Chad

  1. 1University of N'Djamena3.4% top 10% · 365 works

The number is the rank inside the country. The track on each row is the top-10% rate; the tick is the average of all institutions, 10.0% (how it is set): teal above it, red below. The ranking is the quality score, which compares the rate with what each institution's own topics predict and adds a small reward for size, so the rates do not fall in order.

Who are the top researchers on each side?

The most cited researchers on each side, among those ranked.

Central African Republic

  1. 1 Angelique F. Todd #390,506 worldwide 2.9k citations · 66 works
  2. 2 Emmanuel Rivalyn Nakouné #418,176 worldwide 4.3k citations · 126 works
  3. 3 Fidèle Baya #708,365 worldwide 2k citations · 37 works
  4. 4 Marie Roseline Darnycka Bélizaire #783,905 worldwide 527 citations · 25 works
  5. 5 Clotaire Donatien Rafaï #936,367 worldwide 4.9k citations · 41 works

Chad

  1. 1 Andossa Likius #853,994 worldwide 4.6k citations · 80 works
  2. 2 Jean‐Claude Mousseuknadji Kouladoum #1,017,261 worldwide 387 citations · 27 works
  3. 3 Hassane Taïsso Mackaye #1,057,251 worldwide 3.5k citations · 61 works
  4. 4 Yodé Miangotar #1,646,455 worldwide 1.9k citations · 18 works
  5. 5 Hassan Taïsso Mackaye #1,834,244 worldwide 1.1k citations · 22 works