Table 2.
Descriptive Statistics of the Study Variables
| Peer victimization
| ||||||
|---|---|---|---|---|---|---|
| Groups by the levels of PPD symptoms | ||||||
| Low | Moderate | High | ||||
| Age | Mean | SD | Mean | SD | Mean | SD |
|
|
|
|
||||
| 9 | 1.44 | 0.52 | 1.59 | 0.56 | 1.50 | 0.58 |
| 10 | 1.46 | 0.59 | 1.59 | 0.69 | 1.46 | 0.44 |
| 11 | 1.29 | 0.43 | 1.37 | 0.51 | 1.50 | 0.66 |
| 12 | 1.29 | 0.54 | 1.50 | 0.64 | 1.47 | 0.80 |
| Peer bullying
| ||||||
|---|---|---|---|---|---|---|
| Groups by the levels of PPD symptoms | ||||||
| Low | Moderate | High | ||||
| Age | Mean | SD | Mean | SD | Mean | SD |
|
|
|
|
||||
| 9 | 1.44 | 0.64 | 1.44 | 0.67 | 1.48 | 0.68 |
| 10 | 1.35 | 0.54 | 1.44 | 0.66 | 1.60 | 0.72 |
| 11 | 1.28 | 0.55 | 1.33 | 0.50 | 1.44 | 0.47 |
| 12 | 1.22 | 0.45 | 1.40 | 0.55 | 1.70 | 0.68 |
| Externalizing problems (TRF)
| ||||||
|---|---|---|---|---|---|---|
| Groups by the levels of PPD symptoms | ||||||
| Low | Moderate | High | ||||
| Age | Mean | SD | Mean | SD | Mean | SD |
|
|
|
|
||||
| 9 | 10.16 | 12.40 | 11.51 | 12.73 | 11.85 | 13.36 |
| 10 | 7.52 | 8.87 | 10.62 | 12.14 | 10.95 | 13.03 |
| 11 | 5.14 | 10.25 | 7.41 | 10.35 | 9.19 | 8.75 |
| 12 | 5.09 | 5.33 | 9.22 | 8.29 | 12.71 | 11.50 |
Note. PPD=Paranoid Personality Disorder assessed in adolescence. TRF=Teacher’s Report Form.