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Table 2 Average global share of physical activity research publications, 1950–2016

From: Global, regional, and national trends and patterns in physical activity research since 1950: a systematic review

Total number of physical activity publications (n = 23.860)
Income group*** Total publicationsper group Top 5 countries contributionto the total in % Group contributionto the total in %
High income (65 countries) 19,132   
Top 5 countries 10,851   
Top 5/Total High income (%) 56.72 45.5 80.2
Upper middle income (47 countries) 3546   
Top 5 2549   
Top 5/Total UMI (%) 71.88 10.7 14.9
Lower middle income (42 countries) 914   
Top 5 629   
Top 5/Total LMI (%) 68.82 2.6 3.8
Low income (22 countries) 268   
Top 5 204   
Top 5/Total LI (%) 76.12 0.9 1.1
  1. ****World Bank country income classification: High Income - HICs; Upper middle income - UMICs; Lower middle income - LMICs; Low income – LICs