TABLE 1.
Characteristics of adolescents1
| Characteristics | Values |
|---|---|
| Age, mean (SD), y | 14.4 (1.9) |
| Having smart phone, % | 88.9 |
| Number of people in household, mean (SD) | 4.3 (1.0) |
| Proportion of household owning assets, % | |
| Television | 100.0 |
| Computer | 91.7 |
| Refrigerator, freezer | 100.0 |
| Air conditioners | 100.0 |
| Washing machine | 100.0 |
| Gas cooker or stove | 97.2 |
| Water heater | 75.0 |
| Electric bicycle | 50.0 |
| Motorbike | 94.4 |
| Car | 58.3 |
| Proportion of participants with excellent school performance,2 % | |
| Math | 24.0 |
| Physics | 12.5 |
| Chemistry | 27.8 |
| Biology | 28.0 |
| Literature | 8.3 |
| History | 33.3 |
| Geography | 20.8 |
| Foreign language | 15.4 |
| Mother's level of education, % | |
| Less than high school | 13.9 |
| High school | 33.3 |
| College | 33.3 |
| Postgraduate (master's, PhD) | 19.4 |
| Father's level of education, % | |
| Less than high school | 13.9 |
| High school | 30.6 |
| College | 36.1 |
| Postgraduate (master's, PhD) | 19.4 |
| Mother's occupation, % | |
| Blue-collar worker | 2.8 |
| White-collar worker | 38.9 |
| Service, sale | 41.7 |
| Stay-at-home parent | 2.8 |
| Other | 13.9 |
| Father's occupation, % | |
| Blue-collar worker | 8.3 |
| White-collar worker | 41.7 |
| Service, sale | 44.4 |
| Stay-at-home parent | 0.0 |
| Other | 5.6 |
1
n = 36.
2
School performance is subjectively assessed by midterm and final exams. Excellent school performance is defined as test score ≥9.