| Factors | Characteristics | Frequency (%) |
| Sex | Male | 14 (80) |
| Female | 56 (20) | |
| Localities | Fossette | 17 (24) |
| Fossang | 18 (26) | |
| Koupara | 15 (21) | |
| Mawen | 20 (29) | |
| Years of experience | [2 - 5] | 5 (7) |
| [5 - 10] | 17 (24) | |
| [11≤] | 48 (69) | |
| Age | [≤20] | 7 (8) |
| [21 - 35] | 20 (29) | |
| [36 - 55] | 44 (63) | |
| [56≤] | 3 (4) |