Outcome variables
| Outcome variable | Mean (SD) | Range (max-min) |
| FTF | ||
| Attention and concentration difficulties | 3.75 (3.41) | 18.00 |
| Hyperactivity and impulsivity | 3.98 (3.63) | 18.00 |
| Emotional/internalising symptoms | 1.52 (1.79) | 15.00 |
| Emotional/externalising symptoms | 2.83 (3.25) | 21.00 |
| SDQ | ||
| Hyperactivity | 3.04 (2.34) | 10.00 |
| Emotional problems | 1.38 (1.48) | 9.00 |
| Conduct problems | 1.97 (1.59) | 9.00 |
| Peer problems | 1.69 (1.38) | 9.00 |
FTF, Five-to-Fifteen Questionnaire; SDQ, Strengths and Difficulties Questionnaire.