Table 3.
Year to year correlations for impact scores per journal class in five Journal Subject Categories, 2000
| Journal class | y1–y2 | y2–y3 | y3–y4 | y4–y5 | y5–y6 | y6–y7 |
|---|---|---|---|---|---|---|
| Biochemistry and molecular biology | ||||||
| 1–50 | 0.85 | 0.93 | 0.99 | 0.99 | 1.00 | 1.00 |
| 51–100 | 0.91 | 0.99 | 1.00 | 1.00 | 1.00 | 1.00 |
| 101–150 | 0.96 | 0.99 | 1.00 | 1.00 | 1.00 | 1.00 |
| 151–200 | 0.99 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| 201–250 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| 251– | 0.97 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Economics | ||||||
| 1–20 | 0.62 | 0.97 | 0.98 | 0.99 | 1.00 | 1.00 |
| 21–30 | 0.74 | 0.94 | 0.98 | 0.99 | 0.99 | 1.00 |
| 31–40 | 0.28 | 0.94 | 0.98 | 0.99 | 0.99 | 1.00 |
| 41–50 | 0.85 | 0.99 | 1.00 | 1.00 | 1.00 | 1.00 |
| 51–75 | 0.86 | 0.97 | 1.00 | 1.00 | 1.00 | 1.00 |
| 76– | 0.84 | 0.99 | 1.00 | 1.00 | 1.00 | 1.00 |
| Information and library science | ||||||
| 1–15 | 0.46 | 0.74 | 0.95 | 0.99 | 0.97 | 0.99 |
| 16–25 | 0.85 | 0.84 | 0.96 | 0.99 | 1.00 | 0.99 |
| 26–35 | 0.01 | 0.87 | 0.95 | 0.98 | 0.99 | 0.99 |
| 36–50 | 0.86 | 0.91 | 0.98 | 0.99 | 0.99 | 1.00 |
| 51– | 0.94 | 0.90 | 0.98 | 0.99 | 0.99 | 1.00 |
| Mathematics | ||||||
| 1–30 | 0.83 | 0.95 | 0.96 | 0.99 | 0.99 | 1.00 |
| 31–45 | 0.72 | 0.95 | 0.99 | 0.99 | 1.00 | 1.00 |
| 46–60 | 0.79 | 0.97 | 0.99 | 1.00 | 1.00 | 1.00 |
| 61–100 | 0.79 | 0.96 | 0.99 | 0.99 | 1.00 | 1.00 |
| 101–150 | 0.87 | 0.99 | 0.99 | 1.00 | 1.00 | 1.00 |
| 151– | 0.85 | 0.99 | 0.99 | 1.00 | 1.00 | 1.00 |
| Pathology | ||||||
| 1–35 | 0.90 | 0.88 | 0.97 | 0.99 | 1.00 | 1.00 |
| 36–70 | 0.89 | 0.99 | 1.00 | 1.00 | 1.00 | 1.00 |
| 71–150 | 0.70 | 0.99 | 1.00 | 1.00 | 1.00 | 1.00 |
| 151– | 0.98 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |