United States of America (USA)

Research

Date range: 1 October 2020 - 30 September 2021

Subject/journal group: All

The table to the right includes counts of all research outputs for United States of America (USA) published between 1 October 2020 - 30 September 2021 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.

Article Count and Share for United States of America (USA)
Count Share
27250 19222.41

Outputs by subject (Share)

Outputs by subject
Subject Count Share
12637 9315.37
6584 4742.13
7378 4742.82
4275 2788.47

Share output for the past 5 years

Share per year
2016 2017 2018 2019 2020
20010.55 20000.00 20424.50 20186.42 20636.57

Compare United States of America (USA) with other countries/territories

Collaboration

Date range: 1 October 2020 - 30 September 2021

Collaboration by percentage of Share

Hover over the graph to view collaboration by percentage of Share.

Collaboration by percentage of Share
Country Share (%)
China 29.26
UK 14.18
Germany 13.58
Canada 8.72
France 7.69
Japan 7.24
Switzerland 5.16
Australia 5.06
South Korea 4.86
Italy 4.25

Top 10 collaborators with United States of America (USA) by Share

  1. United States of America (USA) and China (3938.05)
    United States of America (USA)1829.35
    China2108.69
  2. United States of America (USA) and United Kingdom (UK) (1908.69)
    United States of America (USA)1090.81
    United Kingdom (UK)817.88
  3. United States of America (USA) and Germany (1827.53)
    United States of America (USA)1021.54
    Germany805.99
  4. United States of America (USA) and Canada (1173.11)
    United States of America (USA)733.47
    Canada439.64
  5. United States of America (USA) and France (1035.06)
    United States of America (USA)630.95
    France404.11
  6. United States of America (USA) and Japan (974.77)
    United States of America (USA)602.78
    Japan371.99
  7. United States of America (USA) and Switzerland (694.96)
    United States of America (USA)414.93
    Switzerland280.04
  8. United States of America (USA) and Australia (681.65)
    United States of America (USA)403.13
    Australia278.52
  9. United States of America (USA) and South Korea (653.94)
    United States of America (USA)393.04
    South Korea260.90
  10. United States of America (USA) and Italy (572.07)
    United States of America (USA)350.70
    Italy221.37

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 2511 852.20
2. Stanford University 1515 587.04
3. Massachusetts Institute of Technology (MIT) 1743 501.76
4. National Institutes of Health (NIH) 1012 402.82
5. University of California, Berkeley (UC Berkeley) 1170 364.65
6. University of Michigan (U-M) 929 348.70
7. University of California, Los Angeles (UCLA) 1022 337.59
8. University of California, San Diego (UC San Diego) 962 323.20
9. Yale University 933 319.28
10. University of Pennsylvania (Penn) 835 301.24