Table 2 Proportions (in %) of articles reaching or exceeding thresholds of citations, for total citations, citations by others, collective self-citations, and increase in the proportion due to collective self-citations, for 88,594 articles in health-related fields published in 2015
① | ② | ③ | ① - ② | |
|---|---|---|---|---|
Number of authors | All citations | Citations by others | Collective self-citations | Increase from collective self- citations |
Proportion with at least 10 citations | ||||
1 | 28.4 | 25.9 | 1.5 | 2.5 |
2–4 | 59.8 | 51.5 | 4.9 | 8.3 |
5–9 | 70.1 | 59.8 | 8.7 | 10.3 |
10–19 | 80.0 | 69.6 | 17.5 | 10.3 |
20–29 | 90.7 | 82.8 | 37.8 | 8.0 |
30–49 | 90.6 | 83.3 | 49.7 | 7.3 |
≥ 50 | 85.8 | 74.7 | 52.6 | 11.1 |
Proportion with at least 20 citations | ||||
1 | 15.2 | 13.3 | 0.3 | 1.9 |
2–4 | 31.0 | 25.3 | 0.8 | 5.8 |
5–9 | 37.8 | 29.3 | 1.4 | 8.5 |
10–19 | 51.3 | 40.4 | 4.2 | 10.9 |
20–29 | 70.6 | 58.8 | 16.3 | 11.8 |
30–49 | 75.4 | 62.9 | 28.9 | 12.4 |
≥ 50 | 67.9 | 56.3 | 30.0 | 11.6 |
Proportion with at least 30 citations | ||||
1 | 8.4 | 7.7 | 0.1 | 0.7 |
2–4 | 17.4 | 13.8 | 0.2 | 3.7 |
5–9 | 21.0 | 15.6 | 0.3 | 5.4 |
10–19 | 32.6 | 24.6 | 1.5 | 7.9 |
20–29 | 54.2 | 44.7 | 8.0 | 9.4 |
30–49 | 60.9 | 49.3 | 14.9 | 11.6 |
≥ 50 | 56.8 | 45.3 | 21.1 | 11.6 |
Proportion with at least 50 citations | ||||
1 | 3.8 | 3.4 | 0.0 | 0.4 |
2–4 | 6.7 | 5.4 | 0.0 | 1.3 |
5–9 | 8.0 | 5.9 | 0.1 | 2.0 |
10–19 | 15.5 | 11.6 | 0.3 | 3.9 |
20–29 | 34.6 | 27.5 | 2.6 | 7.1 |
30–49 | 43.2 | 32.2 | 7.5 | 11.0 |
≥ 50 | 41.6 | 25.3 | 7.4 | 16.3 |