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Table 4 Citation indicators for pneumonia research: rankings by 15 top-producing countries, geographic region and income (2001–2015)

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

  Citations   Citation Rate   H-index
Country
 USA 316,942 Vietnam 50.79 USA 197
 UK 62,612 Switzerland 42.94 UK 106
 France 48,019 South Africa 42.85 France 96
 Spain 43,459 New Zealand 40.49 Spain 96
 Germany 43,436 Saudi Arabia 38.62 Germany 94
 Canada 40,090 UK 38.44 Canada 88
 Netherlands 34,798 Netherlands 38.20 Netherlands 88
 Japan 30,978 Ireland 36.85 Japan 74
 Italy 25,600 Canada 36.75 Switzerland 74
 Switzerland 23,228 Sweden 36.65 Australia 71
 Australia 22,440 Denmark 36.53 Italy 70
 China 18,370 USA 36.28 Belgium 62
 Belgium 13,919 Spain 34.74 Sweden 56
 Sweden 12,203 Belgium 34.71 Denmark 55
 Brazil 11,136 Finland 34.17 China 54
Geographic area
 North America 341,438 North America 35.76 North America 202
 Europe & Central Asia 270,237 Europe & Central Asia 29.20 Europe & Central Asia 172
 East Asia & Pacific 96,628 Sub-Saharan Africa 31.41 East Asia & Pacific 103
 Latin America & Caribbean 22,740 Middle East & North Africa 24.00 Latin America & Caribbean 61
 Sub-Saharan Africa 16,426 Latin America & Caribbean 20.69 Sub-Saharan Africa 54
 Middle East & North Africa 14,159 East Asia & Pacific 20.38 Middle East & North Africa 53
 South Asia 9254 South Asia 20.07 South Asia 46
Countries by income
 HIC 593,632 HIC 29.53 HIC 222
 UMIC 58,785 LMIC 21.82 UMIC 89
 LMIC 17,523 LIC 21.46 LMIC 60
 LIC 4765 UMIC 19.00 LIC 34
  1. HIC high-income countries, UMIC upper-middle-income countries, LMIC lower-middle-income countries, LIC low-income countries
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