Table 2. Relationship between SDQ scores of parents based on school level and gender of children.
| SDQ score of parent | Grade | Boys | Girls | |||||||
| M | SD | N | M | SD | N | F | P | |||
| Emotional problems | 4th–6th | 1.9 | 1.9 | 1777 | 2.1 | 2.2 | 1795 | Gender×School level | 9.618 | ** |
| 7th–9th | 1.5 | 1.8 | 1655 | 2.0 | 2.1 | 1682 | Gender | 52.37 | *** | |
| School level | 26.72 | *** | ||||||||
| Conduct problems | 4th–6th | 2.2 | 1.7 | 1771 | 2.0 | 1.5 | 1795 | Gender×School level | 0.000 | ns |
| 7th–9th | 1.9 | 1.5 | 1838 | 1.7 | 1.5 | 1682 | Gender | 29.37 | *** | |
| School level | 66.09 | *** | ||||||||
| Hyperactivity/inattention | 4th–6th | 3.8 | 2.3 | 1771 | 3.8 | 2.1 | 1795 | Gender×School level | 0.0 | ns |
| 7th–9th | 3.4 | 2.2 | 1838 | 3.4 | 2.0 | 1682 | Gender | 0.0 | ns | |
| School level | 60.97 | *** | ||||||||
| Peer relationship problems | 4th–6th | 2.0 | 1.8 | 1771 | 2.0 | 1.7 | 1795 | Gender×School level | 0.0 | ns |
| 7th–9th | 2.0 | 1.7 | 1838 | 2.0 | 1.7 | 1682 | Gender | 0.0 | ns | |
| School level | 0.0 | ns | ||||||||
| Total difficulty score | 4th–6th | 9.8 | 5.5 | 1771 | 9.0 | 5.5 | 1795 | Gender×School level | 3.862 | * |
| 7th–9th | 8.7 | 5.1 | 1838 | 8.4 | 5.3 | 1682 | Gender | 18.69 | *** | |
| School level | 44.65 | *** | ||||||||
| Prosocial behavior | 4th–6th | 5.9 | 2.0 | 1771 | 6.4 | 2.0 | 1795 | Gender×School level | 0.0 | ns |
| 7th–9th | 5.8 | 2.1 | 1838 | 6.3 | 2.0 | 1682 | Gender | 107.7 | *** | |
| School level | 4.309 | * | ||||||||
*p<0.05,
**p<0.001,
***p<0.0001.