Table 2.
Overall meta-analysis results
| Outcome domain | Number of studies | Number of effect sizes | Average effect size (SE) | 95% CI | Tau-squared (between) | I-squared (between, within) | 95% PI | PPI |
|---|---|---|---|---|---|---|---|---|
| Cyberbullying perpetration | 44 | 96 | −0.18 (.05) | −0.28, −0.09 | 0.06 | 79.71, 9.78 | −0.67, 0.30 | 76.08 |
| Cyberbullying victimization | 39 | 75 | −0.13 (.04) | −0.21, −0.05 | 0.02 | 34.90, 53.77 | −0.40, 0.14 | 72.61 |
| Bullying perpetration | 22 | 67 | −0.18 (.05) | −0.28, −0.08 | 0.03 | 55.20, 37.44 | −0.54, 0.17 | 77.94 |
| Bullying victimization | 24 | 82 | −0.16 (.05) | −0.27, −0.05 | 0.05 | 63.21, 28.97 | −0.59, 0.26 | 73.19 |
SE standard error, CI confidence interval, PI prediction interval, PPI probability of positive impact