United States of America (USA)
Research
Date range: 1 June 2022 - 31 May 2023
Subject/journal group: All
The table to the right includes counts of all research outputs for United States of America (USA) published between 1 June 2022 - 31 May 2023 which are tracked by the Nature Index.
Hover over the donut graph to view the Share for each subject. Below, the same research outputs are grouped by subject. Click on the subject to drill-down into a list of articles organized by journal, and then by title.
Note: Articles may be assigned to more than one subject area.
Count | Share |
---|---|
28760 | 20158.06 |
Outputs by subject (Share)
Subject | Count | Share |
---|---|---|
Biological sciences | 10025 | 7382.61 |
Chemistry | 6031 | 4345.85 |
Earth & environmental sciences | 3680 | 2304.36 |
Health sciences | 6879 | 4949.89 |
Physical sciences | 7168 | 4532.71 |
Share output for the past 5 years
2018 | 2019 | 2020 | 2021 | 2022* |
---|---|---|---|---|
20419.41 | 20178.77 | 20627.93 | 19851.53 | 21473.34 |
Compare United States of America (USA) with other countries/territories
*Note: 2022 data contains Share for article affiliations from newly added health sciences journals.
Collaboration
View the connected world of international research collaboration. Visualize collaborations by subject or region.
Date range: 1 June 2022 - 31 May 2023
Collaboration by percentage of Share
Hover over the graph to view collaboration by percentage of Share.
Country | Share (%) |
---|---|
China | 27.31 |
UK | 13.8 |
Germany | 13.31 |
Canada | 10.41 |
France | 7.86 |
Japan | 6.67 |
Australia | 5.32 |
Switzerland | 5.21 |
Italy | 5.08 |
Spain | 5.04 |
Top 10 collaborators with United States of America (USA) by Share
-
United States of America (USA) and China
(3935.67)
-
United States of America (USA) and United Kingdom (UK)
(1988.94)
-
United States of America (USA) and Germany
(1918.96)
-
United States of America (USA) and Canada
(1499.97)
-
United States of America (USA) and France
(1132.54)
-
United States of America (USA) and Japan
(961.39)
-
United States of America (USA) and Australia
(766.53)
-
United States of America (USA) and Switzerland
(750.75)
-
United States of America (USA) and Italy
(732.71)
-
United States of America (USA) and Spain
(725.89)
Collaboration is determined by the combined fractional count (Share) of United States of America (USA) and the collaborating country.
Top 10 institutions from United States of America (USA) by Share
Institution | Count | Share | |
---|---|---|---|
1. | Harvard University | 3516 | 1099.65 |
2. | Stanford University | 1827 | 512.14 |
3. | Massachusetts Institute of Technology (MIT) | 1918 | 485.67 |
4. | National Institutes of Health (NIH) | 1134 | 392.05 |
5. | University of Michigan (U-M) | 1221 | 367.16 |
6. | Yale University | 1258 | 354.41 |
7. | University of Pennsylvania (Penn) | 1096 | 340.86 |
8. | University of California, San Diego (UC San Diego) | 1020 | 319.40 |
9. | University of California, Los Angeles (UCLA) | 1230 | 317.68 |
10. | University of California, Berkeley (UC Berkeley) | 1283 | 316.70 |

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