Table 2.
Most productive countries in ALS research
| Country | TP | %TP | IP | %IP | CP | %CP |
|---|---|---|---|---|---|---|
| United States | 7,475 | 34.37 | 2,538 | 33.95 | 4,937 | 66.05 |
| Japan | 2,375 | 10.92 | 527 | 22.19 | 1,848 | 77.81 |
| Italy | 1,727 | 7.94 | 903 | 52.29 | 824 | 47.71 |
| United Kingdom | 1,677 | 7.71 | 1,326 | 79.07 | 351 | 20.93 |
| Germany | 1,454 | 6.69 | 1,062 | 73.04 | 392 | 26.96 |
| Canada | 1,172 | 5.39 | 848 | 72.35 | 324 | 27.65 |
| France | 1,085 | 4.99 | 714 | 65.81 | 371 | 34.19 |
| Netherlands | 504 | 2.32 | 491 | 97.42 | 13 | 2.58 |
| Spain | 499 | 2.29 | 298 | 59.72 | 201 | 40.28 |
| Australia | 483 | 2.22 | 297 | 61.49 | 186 | 38.51 |
TP = Total publications; IP = independent publications; CP = collaborated publications.