The top 10 countries for scientific publication output, impact and citation performance in dementia research (1980–2013)
| Rank | Volume of dementia publications | Citation impact of dementia publications portfolio (ARC) | Highly cited publications (%) |
|---|---|---|---|
| 1 | USA | Ireland | USA |
| 2 | UK | USA | Norway |
| 3 | Germany | Norway | Ireland |
| 4 | Japan | Finland | Portugal |
| 5 | Italy | The Netherlands | Switzerland |
| 6 | Canada | Canada | Finland |
| 7 | France | UK | Belgium |
| 8 | China | Belgium | Denmark |
| 9 | Sweden | Portugal | UK |
| 10 | Australia | Sweden | Canada |
Bold text highlights UK entries.
Citation impact is calculated as the average of relative citations (ARC), which measures scientific impact based on paper citation counts normalised to account for different citation patterns across fields/subfields and the number of years since a paper was published. The percentage of highly cited publications refers to the percentage of publications in a country's portfolio that are in the top 10% most cited publications in their field. The table modified and reproduced with permission from Marjanovic et al.10