Classification of journals according to their impact factor
| Impact factor |
Journals (n (%)) | Articles published in these journals (n (%)) |
| >20 | 2 (0.3) | 6 (0.3) |
| 10–19 | 5 (0.9) | 12 (0.5) |
| 5–9 | 10 (1.7) | 18 (0.8) |
| 4–4.999 | 9 (1.6) | 37 (1.6) |
| 3–3.999 | 19 (3.3) | 68 (3.0) |
| 2–2.999 | 44 (7.6) | 147 (6.5) |
| 1–1.999 | 83 (14.4) | 699 (31.1) |
| <1 | 149 (25.8) | 463 (20.6) |
| Not indexed in SCI | 256 (44.4) | 797 (35.5) |
| Total | 577 (100.0) | 2247 (100.0) |
SCI=science citation index.