| Variables | Number (N = 1274) | Percentage (%) |
| Existence of signs of recognition (N = 1274) | ||
| Yes | 131 | 10.3 |
| No | 1143 | 89.7 |
| Identification mark (N = 131) | ||
| Bracelet | 71 | 54.2 |
| Necklace | 31 | 23.7 |
| Ring | 23 | 17.6 |
| Nickname | 19 | 14.5 |
| T-shirt | 12 | 9.2 |
| Ankle bracelet | 7 | 5.3 |
| Earring | 4 | 3.1 |
| Others | 20 | 15.3 |