Table 4.
Child’s behaviours: Pre- and post-course means ( SDs ) and effect sizes for Wave 1 and for Waves 2 and 3 combined
| |
Wave 1 |
Waves 2 and 3 |
||||||
|---|---|---|---|---|---|---|---|---|
| N |
Precourse |
Postcourse |
Effect |
N |
Precourse |
Postcourse |
Effect |
|
| (Mean, SD ) | (Mean, SD ) | size | (Mean, SD ) | (Mean, SD ) | size | |||
| Emotional symptoms |
1067 |
3.8 |
2.8 |
- 0.42 |
3154 |
3.8 |
2.9 |
- 0.37 |
| |
|
(2.5) |
(2.3) |
|
|
(2.6) |
(2.5) |
|
| Conduct problems |
1071 |
4.3 |
3.1 |
- 0.55 |
3144 |
4.4 |
3.4 |
- 0.45 |
| |
|
(2.4) |
(2.2) |
|
|
(2.5) |
(2.3) |
|
| Hyperactivity |
1053 |
6.2 |
5.0 |
- 0.43 |
3138 |
6.2 |
5.3 |
- 0.34 |
| |
|
(2.7) |
(2.6) |
|
|
(2.7) |
(2.7) |
|
| Peer problems |
1064 |
3.3 |
2.8 |
- 0.24 |
3131 |
3.3 |
3.0 |
- 0.15 |
| |
|
(2.2) |
(2.1) |
|
|
(2.3) |
(2.2) |
|
| Prosocial |
1068 |
6.4 |
7.0 |
- 0.26 |
3165 |
6.4 |
6.9 |
0.22 |
| |
|
(2.3) |
(2.1) |
|
|
(2.3) |
(2.2) |
|
| Total difficulties |
1038 |
17.5 |
13.5 |
- 0.57 |
3028 |
17.8 |
14.5 |
- 0.45 |
| |
|
(6.9) |
(7.0) |
|
|
(7.2) |
(7.4) |
|
| Impact |
1031 |
2.9 |
1.7 |
- 0.48 |
3046 |
3.0 |
1.7 |
- 0.52 |
| (2.7) | (2.4) | (2.8) | (2.4) | |||||
Note. Effect sizes are Cohen’s d.