Table 3.
Strengths and Difficulties Questionnaire (SDQ) and Social Communication Questionnaire (SCQ) Effects of Centre, status, and gender (adjusted for age)
| Parent ratings | |||||||||||||||||||||||
| Age | Centre° | Status° | Gender° | Centre × Status° | Centre × Gender° | Status × Gender° | Centre × Status × Gender° | ||||||||||||||||
| rho | P | Q | Crit | Sig | Q | Crit | Sig | Q | Cri | Sig | Q | Crit | Sig | Q | .Cri | Sig | Q | Crit | Sig | Q | Crit | Sig | |
| CP | -0.023 | 0.265 | 44.6 | 24.3 | *** | 344.1 | 4.04 | *** | 8.06 | 4.04 | ** | 36 | 24.3 | ** | 12.4 | 24.3 | 10.0 | 4.04 | ** | 10.2 | 24.3 | ||
| EP | 0.020 | 0.334 | 19.6 | 23.4 | 122.8 | 3.98 | *** | 1.0 | 3.98 | 27.0 | 23.4 | * | 15.70 | 23.4 | 2.6 | 3.98 | 29.8 | 23.4 | * | ||||
| H | -0.046 | 0.022 | 26.7 | 19.9 | ** | 1653 | 3.89 | *** | 58.90 | 3.89 | *** | 151.3 | 19.9 | *** | 15.52 | 19.9 | 40.6 | 3.89 | *** | 14.9 | 19.9 | ||
| PB(i) | 0.030 | 0.133 | 152 | 22.9 | *** | 69.35 | 4.41 | *** | 32.34 | 4.41 | *** | 48.1 | 22.9 | *** | 14.0 | 22.9 | 5.56 | 4.41 | * | 14.6 | 22.9 | ||
| PP | 0.021 | 0.520 | 23.6 | 24.7 | 200.0 | 4.23 | *** | 2.26 | 4.23 | 28.6 | 24.7 | * | 16.0 | 24.7 | 3.8 | 4.23 | 20.5 | 24.7 | |||||
| AvP | -0.008 | 0.681 | 16.3 | 22.2 | 937.71 | 3.95 | *** | 16.82 | 3.95 | *** | 90.3 | 22.2 | *** | 20.1 | 22.2 | 25.83 | 3.95 | *** | 19.36 | 22.2 | |||
| SCQ | 0.009 | 0.673 | 699.9 | 24.0 | *** | 107.9 | 4.31 | *** | 6.88 | 4.31 | * | 78 | 24.0 | *** | 15.6 | 24.0 | 3.6 | 4.31 | 15.8 | 24.0 | |||
| Teacher ratings | |||||||||||||||||||||||
| Age | Centre° | Status° | Gender° | Centre × Status° | Centre × Gender° | Status × Gender° | Centre × Status × Gender° | ||||||||||||||||
| rho | P | Q | Crit | Sig | Q | Crit | Sig | Q | Cri | Sig | Q | Crit | Sig | Q | .Cri | Sig | Q | Crit | Sig | Q | Crit | Sig | |
| CP | -0.005 | 0.809 | 52.5 | 24.5 | *** | 120.9 | 4.37 | *** | 15.53 | 4.37 | *** | 7 | 24.5 | 5.9 | 24.5 | 1.0 | 4.37 | 16.6 | 24.5 | ||||
| EP | 0.068 | 0.001 | 23.0 | 24.8 | 52.2 | 4.09 | *** | 3.2 | 4.09 | 2.6 | 24.8 | 9.43 | 24.8 | 4.2 | 4.09 | * | 8.9 | 24.8 | |||||
| H | -0.058 | 0.005 | 38.6 | 20.9 | *** | 602 | 3.92 | *** | 60.33 | 3.92 | *** | 10.1 | 20.9 | 24.59 | 20.9 | * | 11.9 | 3.92 | *** | 9.3 | 20.9 | ||
| PB(i) | 0.038 | 0.062 | 53.1 | 22.7 | *** | 95.2 | 4.01 | *** | 40.64 | 4.01 | *** | 21.1 | 22.7 | 19.80 | 22.7 | 2.8 | 4.01 | 7.4 | 22.7 | ||||
| PP | 0.028 | 0.175 | 41 | 23.8 | ** | 127.33 | 4.18 | *** | 1.60 | 4.18 | 9.9 | 23.8 | 14.4 | 23.8 | 1.43 | 4.18 | 13.8 | 23.8 | |||||
| AvP | 0.000 | 0.991 | 69.4 | 23.4 | *** | 361.5 | 4.11 | *** | 17.75 | 4.11 | *** | 6.8 | 23.4 | 24.2 | 23.4 | * | 8.1 | 4.11 | ** | 7.4 | 23.4 | ||
SDQ scales
CP Conduct Problems
EP Emotional Problems
H Hyperactivity
PB(i) Prosocial Behaviour (inverted)
PP Peer Problems
AvP Average Problems
SCQ scale
SCQ Total score
° Between-by-within design; dependent score is adjusted for age (residuals of linear regression)
Q Robust between/within test statistic for trimmed means (see methods section)
Crit. Critical value (α = .05)
Sig two sided α-level
* p < 0.05
** p < .0.01
*** p < .0.001