| Variable | Classification | |
| Age (yrs) | 23.9 ± 0.4 | |
| Height (cm) | 175.1 ± 0.6 | |
| Weight (kg) | 70.7 ± 2.2 | |
| BMI (kg/m2) | 23.0 ± 0.6 | |
| Gender (%) | Male | 34 (100.0) |
|
| Female | - |
| Blood type (%) | AB | 4 (11.8) |
|
| A | 12 (35.3) |
| B | 12 (35.3) | |
|
| O | 6 (17.6) |
| Smoking (%) | Smoker | 8 (23.5) |
|
| Nonsmoker | 26 (76.5) |
| Drinking (%) | Yes | 34 (100.0) |
|
| No | - |
|
| 1 bottle/week | 21 (61.8) |
| 2 bottle/week | 13 (38.2) | |
| PSQI (score) | 2.2 ± 0.1 | |
| Skin injury (%) | Injuries experience | 15 (44.1) |
| Injuries inexperience | 17 (50.0) | |
| Don’t know | 2 (5.9) | |
| Type of skin injury (%) | Abrasion | 8 (23.5) |
| Burns | 5 (14.7) | |
| Incised wound | 2 (5.9) | |
| Nothing | 19 (55.9) |