| Indicator | 2009 | 2010 | 2011 |
|---|---|---|---|
|
1. Impact Factor |
3.84 |
4.15 |
4.31 |
|
2. Pages published |
2,126 |
2,224 |
2,236 |
|
3. Research reports published |
183 |
173 |
173 |
|
4. Research reports submitted |
840 |
713 |
811 |
|
5. Rejection rate |
74% |
70% |
75% |
|
6. Weeks to respond to submission (average) |
5.7 |
6.4 |
5.4 |
|
7. Months from final acceptance to online publication (average) |
3.1 |
4.0 |
2.7 |
|
8. Percent of pages devoted to commissioned material |
15% |
22% |
21% |
Note: figures for 4 onwards relate to research reports and unsolicited reviews