Table 5 Characteristics of interviewees (n = 13)
| Â | n | mean (SD) app usage in minutes |
|---|---|---|
Gender | ||
 Girl | 7 | 68 (32) |
 Boy | 6 | 45 (31) |
Education type | ||
 General & technical track | 9 | 62 (31) |
 Vocational track | 4 | 47 (39) |
Grade | ||
 1st year of secondary | 6 | 53 (38) |
 2nd year secondary | 3 | 40 (25) |
 3rd year of secondary | 4 | 77 (23) |
Family Affluence | ||
 Low | 2 | 29 (8) |
 Middle | 7 | 63 (36) |
 High | 4 | 62 (31) |