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Demographic characteristics of people with participants (n = 729).
| Characteristics | Frequencies | Percentage (%) | Mean (SD) |
|---|---|---|---|
| Gender | |||
| Male | 493 | 67.6 | |
| Female | 236 | 32.4 | |
| Age | 16.2 (1.1) | ||
| Age group | |||
| Age 16 and under | 441 | 60.5 | |
| Over 16 years old | 288 | 39.5 | |
| Grade | |||
| 1 | 420 | 57.6 | |
| 2 | 124 | 17.0 | |
| 3 | 185 | 25.4 | |
