Table 1.
Sample characteristics
| Total1 (N = 30) | BSMAS (n = 19) | IGTD-10 (n = 12) | |
| Sociodemographic variables | |||
| Age, M (SD) | 21.3 (2.1) | 21.1 (2.1) | 21.6 (2.1) |
| Female gender, n (%) | 15 (50.0) | 15 (78.9) | 0 (0.0) |
| Residental situation | |||
| Alone, n (%) | 5 (16.7) | 2 (10.5) | 3 (25.0) |
| With parents/grand-parents, n (%) | 19 (63.3) | 12 (63.2) | 8 (66.7) |
| With partner, n (%) | 1 (3.3) | 1 (5.3) | 0 (0.0) |
| Shared flat, n (%) | 5 (16.7) | 4 (21.1) | 1 (8.3) |
| Vocational school situation | |||
| Still in vocational school, n (%) | 18 (60.0) | 12 (63.2) | 6 (50.0) |
| Already finished vocational school, n (%) | 10 (33.3) | 5 (26.3) | 6 (50.0) |
| Dropped out of vocational school, n (%) | 2 (6.7) | 2 (10.5) | 0 (0.0) |
| Partnership, n (%) | 12 (40.0) | 9 (47.4) | 3 (25.0) |
| Internet-related variables | |||
| Number of fulfilled IUD criteria | |||
| 0–2 (unproblematic Internet use), n (%) | 16 (53.3) | 10 (52.6) | 7 (58.3) |
| 3–4 (problematic Internet use), n (%) | 8 (26.7) | 4 (21.1) | 4 (33.3) |
| 5–9 (pathological Internet use), n (%) | 6 (20.0) | 5 (26.3) | 1 (8.3) |
Notes: 1 In total, 30 participants were interviewed. One participant reported to use online games and social media equally and completed both screening instruments (BSMAS and IGDT-10). All sociodemographic data and the number of fulfilled IUD criteria were collected in the second follow-up interview of the iPIN study.