| Type | Responses | |
| Frequency | % | |
| Friends | 131 | 17.4 |
| Collegues | 233 | 31.0 |
| Other trainees in the same class | 350 | 46.5 |
| Other trainees outside the class | 111 | 14.8 |
| None of the above | 136 | 18.1 |