Table 5.

Concurrent validity of the SDQ-H scores according to DAWBA diagnosis of internalizing, externalizing and any disorders.

Score	Internalizing			Externalizing			Any disorder****
	Present	Absent	t-value	Present	Absent	t-value	Present	Absent	t-value
PARENT-REPORT
Total Difficulties	10.2 ± 5.8	6.5 ± 4.1	6.53***	12.4 ± 4.8	6.6 ± 4.6	6.66***	11.3 ± 5.5	5.9 ± 4.1	10.03***
Emotional symptoms	3.5 ± 2.5	1.6 ± 1.5	9.54***	1.8 ± 1.3	1.7 ± 1.8	0.32	3.0 ± 2.1	1.6 ± 1.5	6.86***
Conduct problems	1.9 ± 1.4	1.4 ± 1.4	3.24**	3.0 ± 1.8	1.4 ± 1.4	6.20***	2.6 ± 1.7	1.3 ± 1.3	7.52***
Hyperactivity	2.5 ± 2.3	2.0 ± 2.1	2.13*	6.1 ± 2.4	1.9 ± 1.9	11.40***	3.8 ± 2.7	1.7 ± 1.8	8.59***
Peer problems	2.2 ± 1.6	1.6 ± 1.4	3.52***	1.5 ± 1.4	1.6 ± 1.5	0.69	2.0 ± 1.7	1.3 ± 1.4	3.62***
Prosocial behavior	8.4 ± 2.1	8.7 ± 1.6	1.45	7.6 ± 2.1	8.7 ± 1.6	3.85***	8.2 ± 1.9	8.7 ± 1.5	2.72**
Impact	1.5 ± 2.6	0.2 ± 0.9	8.69***	1.2 ± 1.4	0.3 ± 1.2	4.02***	1.6 ± 2.4	0.1 ± 0.7	11.26***
SELF-REPORT
Total Difficulties	14.4 ± 4.4	8.6 ± 4.4	10.36***	11.9 ± 4.7	9.0 ± 4.6	3.07**	13.6 ± 4.9	8.2 ± 4.2	10.88***
Emotional symptoms	5.2 ± 2.1	2.4 ± 1.9	11.82***	2.1 ± 1.8	2.6 ± 2.1	1.21	4.1 ± 2.6	2.4 ± 1.8	6.94***
Conduct problems	2.6 ± 1.5	1.8 ± 1.5	4.76***	3.3 ± 2.1	1.8 ± 1.5	5.13***	2.9 ± 1.8	1.6 ± 1.4	8.11***
Hyperactivity	4.0 ± 1.9	2.8 ± 2.1	4.49***	4.9 ± 2.4	2.8 ± 2.0	5.03***	4.5 ± 2.2	2.7 ± 2.1	7.04***
Peer problems	2.6 ± 1.6	1.7 ± 1.4	4.57***	1.6 ± 1.2	1.8 ± 1.5	0.68	2.1 ± 1.6	1.4 ± 1.3	4.76***
Prosocial behavior	8.3 ± 1.5	8.3 ± 1.5	0.12	7.7 ± 1.5	8.3 ± 1.5	1.95	8.0 ± 1.5	8.3 ± 1.6	1.62
Impact	1.5 ± 2.1	0.2 ± 0.7	11.82***	0.4 ± 1.0	0.3 ± 0.9	0.75	1.2 ± 1.9	0.2 ± 0.6	9.48***

Mean scores ± SD are shown.

*p < 0.05, **p < 0.01, ***p < 0.001.

****Internalizing or externalizing disorders or both.