Table 1

Child Behaviour Checklist (CBCL) scores after ASO compared to normal children

CBCL assessed by parents	Score*	Frequency in normal children (%)†	Frequency in group A (%)‡	p value§	Frequency in group B (%)‡	p value§
*Scores <60, <67, and >33, resp. = no problems; scores 60–63, 67–70, and 30–33, resp. = borderline problems; scores >63, >70, and <30 = striking problems. †n = 2856, according to Achenbach.¹⁴
‡Group A: total group of 60 children; group B: subgroup of 54 children without severe neurological damage.
§Calculated by comparison of frequencies versus normal children, p values uncorrected.
Internalising problems	<60	84	65	0.0005	63	0.0003
	60–63	6	7		8
	>63	10	28		29
Externalising problems	<60	84	72	0.006	72	0.001
	60–63	6	17		16
	>63	10	11		12
Social problems	<67	95	89	0.0001	90	0.0001
	67–70	3	0		0
	>70	2	11		10
Attention problems	<67	95	87	0.05	86	0.03
	67–70	3	7		8
	>70	2	6		6
Total behavioural problems	<60	84	63	0.0001	61	0.0001
	60–63	6	7		6
	>63	10	30		33

Social involvement	<30	2	15	<0.0001	4	>0.2
	30–33	3	3		4
	>33	95	82		92
School performance	<30	2	8	0.0005	0	0.001
	30–33	3	10		14
	>33	95	82		86
Total competence	<30	2	15	<0.0001	4	>0.2
	30–33	3	2		0
	>33	95	83		96