TABLE 2

Effect Sizes by Bullying Type: Victimization, Perpetration, and Bully-Victim

TypeOutcomek (n)OR (95% CI)L2: τ2, I2L3: τ2, I2
Bullying victim
Suicidal ideation41 (124)2.34 (2.03–2.69)0.06, 21.600.19, 78.70
Suicidal behavior18 (33)2.94 (2.36–3.67)0.19, 71.010.06, 23.52
Bullying perpetration
Suicidal ideation23 (64)2.12 (1.67–2.69)0.01, 0.010.27, 98.51
Suicidal behavior15 (25)2.62 (1.51–4.55)0.06, 6.100.94, 91.30
Bully-victim
Suicidal ideation11 (19)3.81 (2.13–6.80)0.01, 0.010.78, 91.63
Suicidal behavior8 (10)4.02 (2.39–6.76)0.35, 72.500.01, 0.01
  • k, number of studies; L2, effect size level; L3, study level; n, number of effect sizes; victim, victimization.