Table c4. Other key figures concerning PhD students 2011
| AR | ST | HE | BSS | AU total | |
| Age of graduation (years) | 37.0 | 30.7 | 35.3 | 33.7 | 33.3 |
| Number of female PhD students | 194 | 323 | 366 | 125 | 1.008 |
| Number of male PhD students | 146 | 468 | 236 | 106 | 956 |
| Period abroad (1-3 months) | 21 | 53 | - | 13 | 87 |
| Period abroad (minimum 3 months) | 21 | 31 | - | 40 | 92 |
| Number of foreign PhD students | 42 | 292 | 60 | 59 | 453 |
| Number of co-financed and externally financed PhD students | 154 | 713 | 487 | 102 | 1.456 |