| University | Number of Students in the Sample |
| National Kapodistrian University of Athens | 471 |
| University of Thessaloniki | 447 |
| National Technical University of Athens | 139 |
| University of Patras | 389 |
| University of Ioannina | 428 |
| University of Crete | 318 |
| University of the Aegean | 43 |
| Total | 2235 |