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Change in SDQ from T1 to T2
| T1 | T2 | |||
|---|---|---|---|---|
| M | SD | M | SD | |
| Internalizing problems | 1.99 | 2.1 | 1.76 | 1.86 |
| Externalizing problems | 1.01 | 1.39 | 0.84 | 1.46 |
| Hyperactivity | 2.99 | 2.55 | 2.89 | 2.62 |
| Peer problemsa | 1.14 | 1.63 | 0.97 | 1.27 |
| Prosocial behavior | 6.77 | 1.49 | 6.9 | 1.31 |
| Total difficultiesb | 7.15 | 5.33 | 6.47 | 4.99 |
a Peer problems decreased from T1 to T2, t(173) = 2.09, p = .038
b Total difficulties decreased from T1 to T2, t(173) = 2.29, p = .023
