Table 1.
Description of studies included in SET-Bullying
| Database name | |
|---|---|
| RESPEKT [9] | DFE-SHEFFIELD [8] |
| Schedule of study measurementsa | |
| T1: Baseline, May 2002, −3 months T2: End of intervention, May 2003, 9 months T3: Follow-up 1, May 2004, 21 months T4: Follow-up 2, May 2005, 33 months |
T1: Baseline, late November/early December 1990, −9 months T2: End of intervention, late November/early December 1992, 15 months T3: Follow-up, late November/early December 1993, 27 months |
| School grades (age in years) of pupils | |
| Primary school: 5–7th (age: 11–13) | Primary school: 3–6th (age: 7–11) |
| Secondary school: 8–10th (age: 14–16) | Secondary school: 7–18th (age: 12–18) |
| Number and type of study groups/clusters | |
| 18 primary school grade groups | 17 primary school groups |
| 6 secondary school grade groups | 7 secondary school groups |
| Number of pupils at each study measurementb | |
| Primary school: T1: 417, T2: 414, T3: 413, T4: 414 | Primary school: T1: 2617, T2: 2481, T3: 655 |
| Secondary school: T1: 329, T2: 354, T3: 364, T4: 365 | Secondary school: T1: 4123, T2: 4624 |
| Number (percentage) of female pupils in each measurementb | |
| Primary school: T1: 228 (54.7 %), T2: 222 (53.6 %), T3: 199 (48.2 %), T4: 210 (50.7 %) | Primary school: T1: 1350 (51.6 %), T2: 1234 (49.7 %), T3: 317 (48.4 %) |
| Secondary school: T1: 178 (54.1 %), T2: 194 (54.8 %), T3: 166 (45.6 %), T4: 170 (46.6 %) | Secondary school: T1: 1977 (48.0 %), T2: 2272 (49.1 %) |
a Time in months corresponds to time relative to the start of the intervention
b Number of pupils includes all pupils with a least one non-missing value in any of study outcomes