Table 2 Participants in control and intervention groups
Autumn 2016 Baseline (grade 7) | Autumn 2017 Time 1 (grade 8) | Autumn 2018 Time 2 (grade 9) | |
|---|---|---|---|
Control: | |||
Sample: | 575 | 595 | 648 |
Included in the analyses: | 534 | 497 | 527 |
Non-response: | 7.1% | 16.5% | 18.7% |
Intervention: | |||
Sample: | 543 | 534 | 571 |
Included in the analyses: | 519 | 474 | 484 |
Non-response: | 4.4% | 11.2% | 15.2% |