Background
Methods
Description of the data set and design of the study
Sampling of Schools and Pupils
Design of the study and data collection procedure
Assessment of Psychiatric Morbidity
Assessment of Suicidal Ideation
Assessment of Bulling Behavior
Sociodemographic Variables
Statistical Analysis
Results
Description of the sample
Prevalence of Bullying/Victimisation and suicidal ideation
Male | Female | Total | |
---|---|---|---|
N* (%) | N* (%) | N* (%) | |
«Bullied by others» - Victims | |||
Not at all | 836 (87.2%) | 1238 (89.3%) | 2074 (88.2%) |
Less frequent victimization (Less than weekly) | 130 (11.3%) | 173 (9.4%) | 303 (10.4%) |
Frequent victimization (Weekly) | 22 (1.5%) | 28 (1.3%) | 50 (1.4%) |
p** = 0.4103 | 2427 (100%) | ||
«Bullying others» - Perpetrators | |||
Not at all | 694 (72.4%) | 1274 (89.1%) | 1968 (80.7%) |
Less frequent bullying others (Less than weekly) | 240 (22.8%) | 151(10.1%) | 391 (16.5%) |
Frequent bullying others (Weekly) | 54 (4.8%) | 14 (0.7%) | 68 (2.8%) |
p** < 0.001 | 2427 (100%) |
Gender | Suicidal ideation N (%)* |
---|---|
Male | 46 (2.4%) |
Female | 108 (5.1%) |
Total | 154 (3.7%) |
p-value** <0.001 | |
Bullying Behaviors
| |
"Bullied by others" - Victims
| |
No | 110 (2.9%) |
Yes, less frequent victimization | 26 (6.8%) |
Yes, frequent victimization | 18 (30.4%) |
p-value** <0.001 | |
"Bully others" - Perpetrators
| |
No | 115 (3.3%) |
Yes, less frequent bullying | 32 (4.9%) |
Yes, frequent bullying | 7 (7%) |
p-value**= 0.090 |
Logistic Regression analysis
Odds Ratios (95% CI) of reporting Suicidal ideation | ||||
---|---|---|---|---|
Model 1: | Model 2: | Model 3: | Model 4: | |
adjusted for sex and age | Model 1 + socioeconomic and family factors* | Model 2 + psychiatric morbidity** | Model 3 + being simultaneously a bully† or victim‡
| |
«Bullied by others» - Victims
| ||||
No
| 1.00 | 1.00 | 1.00 | 1.00 |
Yes, all frequencies
| 3.72 (2.40 - 5.74) | 3.43 (2.15 - 5.49) | 2.03 (1.20 - 3.44) | 1.94 (1.12 - 3.34) |
Yes, less frequent victimization
| 2.55 (1.52 - 4.30) | 2.38 (1.34 - 4.24) | 1.42 (0.75 - 2.68) | 1.34 (0.69 - 2.60) |
Yes, frequent victimization
| 15.64 (7.33 - 33.35) | 14.19 (6.58 - 30.59) | 8.04 (3.14 - 20.62) | 7.78 (3.05-19.90) |
«Bully others» - Perpetrators
| ||||
No
| 1.00 | 1.00 | 1.00 | 1.00 |
Yes, all frequencies
| 2.11 (1.18 - 3.20) | 1.72 (1.03 - 2.87) | 1.50 (0.89 - 2.54) | 1.35 (0.77 - 2.35) |
Yes, less frequent bullying
| 1.94 (1.18 - 3.20) | 1.70 (0.98 - 2.94) | 1.54 (0.88 - 2.72) | 1.39 (0.77 - 2.53) |
Yes, frequent bullying
| 3.40 (1.27 - 9.07) | 1.87 (0.75 - 4.66) | 1.33 (0.58 - 3.03) | 1.13 (0.47-2.72) |