Table 1.
Trends in citation concentration by field
| OECD major field | Minor field | WoS categories | |||
| N | Gnics (Δ %) | Gn (Δ %) | P | ||
| Agricultural sciences | Agriculture, forestry, fisheries | 6 | 4 (13.1) | 1 (4.1) | 470,781 |
| Animal and dairy science | 1 | 0 (6.4) | 1 (18.7) | 180,786 | |
| Other agricultural science | 4 | 3 (10.9) | 4 (12.1) | 729,668 | |
| Veterinary science | 1 | 0 (8.9) | 0 (9.5) | 382,829 | |
| Medical and health sciences | Basic medical research | 10 | 4 (7.7) | 4 (6.1) | 3,226,140 |
| Clinical medicine | 32 | 24 (28.9) | 19 (12.4) | 9,591,374 | |
| Health sciences | 17 | 8 (25.0) | 6 (9.0) | 1,557,064 | |
| Natural sciences | Biological sciences | 21 | 5 (12.5) | 9 (0.8) | 4,636,995 |
| Chemical sciences | 9 | 2 (1.9) | 4 (6.9) | 3,650,044 | |
| Computer and information sciences | 8 | 2 (−7.0) | 1 (−0.2) | 15,087 | |
| Earth and related environmental sciences | 10 | 3 (12.4) | 6 (9.9) | 1,544,402 | |
| Mathematics | 7 | 0 (1.3) | 4 (23.7) | 361,530 | |
| Other natural sciences | 1 | 1 (40.8) | 0 (−9.8) | 674,780 | |
The table reports the number of WoS subject categories (N) grouped under each OECD major and minor field of science. Gnics is the number of WoS subject categories with >10% increase in citation concentration for the top 1% most-cited authors in the period 2011–2015 compared to the period 2000–2004. The percentages in parentheses report the total, weighted change in citation concentration. Gn is the corresponding change in publication concentration, using full count, for the 1% most-cited authors. P is the total number of papers written by authors classified under each OECD minor field.