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Table 3 Top 15 countries and world regions ranked according to population index, GDP index, GNI per capita index, R&D expenditure index and Researchers in R&D Indexb,a

From: A snapshot of pneumonia research activity and collaboration patterns (2001–2015): a global bibliometric analysis

Countrya Population Indexb Country GPD Indexc Country GNI per capita Indexd Country R&D expenditure Indexe Country Researchers in R&D Indexf
Switzerland 70.32 Gambia 30.83 USA 18.31 USA 3276.91 USA 2.25
Netherlands 55.23 Malawi 9.27 China 14.08 Spain 1056.90 India 1.84
Iceland 51.70 Uganda 3.42 India 8.25 UK 993.78 Uganda 1.39
Denmark 50.54 Guinea Bissau 2.62 Malawi 5.19 China 735.50 China 1.22
Finland 40.77 Andorra 1.94 Brazil 4.83 Italy 731.10 Malawi 1.16
Belgium 37.29 Kenya 1.88 UK 4.67 France 712.03 Brazil 1.06
Sweden 35.94 Vanuatu 1.78 Japan 4.54 Germany 589.28 Tanzania 0.78
Israel 35.05 Cambodia 1.60 France 4.40 Canada 579.61 Cambodia 0.67
Australia 34.24 Nepal 1.55 Spain 4.20 Brazil 557.01 South Africa 0.62
Canada 32.71 Grenada 1.35 Germany 4.06 Turkey 532.13 Italy 0.54
USA 28.78 Israel 1.26 Uganda 4.04 Netherlands 500.78 Philippines 0.53
Spain 27.90 Papua N Guinea 1.26 Bangladesh 3.07 Japan 493.90 Colombia 0.52
Greece 26.84 Mozambique 1.25 Canada 2.89 Greece 448.47 Mozambique 0.52
UK 26.32 Netherlands 1.22 Kenya 2.86 Thailand 445.07 Turkey 0.51
New Zealand 25.65 Tunisia 1.19 Italy 2.59 Gambia 423.33 Ghana 0.50
  1. a Monaco has a population index of 112.42 and Andorra, 75.86; these countries were excluded due to their especially small size and population b Number of publications per million inhabitants
  2. c Number of publications per 1 billon US dollars of gross domestic product (GPD)
  3. dNumber of publications per 100 USD dollars of gross national income (GNI) per capita
  4. e Numbers of publications per % of GDP expenditure in Research and Development (R&D)
  5. f Numbers of publications per researcher per million inhabitants