Table 2 Characteristics of the sample of 1331 participating students
User Characteristicsa | Intervention N = 656 participants | Control N = 675 participants |
|---|---|---|
Grade of student at baseline, n(%) | ||
Grade 7–9 | 503 (77%) | 541 (80%) |
Grade 10–11 | 153 (23%) | 134 (20%) |
Frequency of use, n(%) | ||
High users (≥1 order / week on average) | 166 (25%) | 219 (32%) |
Low users (< 1 order / week on average) | 490 (75%) | 456 (68%) |