Table 2.

Correlations among Subject Characteristics and Child Behaviour Checklist Composite and Syndrome Scales

	Gender	Age	Ethnicity	MSEL Visual Reception	MSEL Expressive Language	Severity of Autistic	Vineland ABC
Externalising problems	−0.11	0.10	0.14	−0.32**	−0.21**	−0.13	−0.16*
Attention problems	−0.03	0.11	0.17*	−0.31**	−0.26**	−0.06	−0.20**
Aggressive behaviour	−0.11	0.03	0.05	−0.32**	−0.19*	−0.11	−0.19*
Internalising problems	−0.13	0.16*	0.16	−0.17*	−0.21*	0.01	−0.29**
Emotionally reactive	−0.19*	0.05	0.13	−0.14	−0.20*	−0.06	−0.15
Anxious/Depressed	−0.14	0.12	0.21**	−0.20*	−0.23**	−0.01	−0.25**
Somatic complaints	−0.10	0.25**	−0.03	−0.05	−0.10	−0.10	−0.24**
Withdrawal	−0.05	0.17*	0.16*	−0.12	−0.15	−0.11	−0.34**
Sleep problems	−0.24*	0.02	0.22**	−0.05	−0.07	−0.02	−0.09

^*P < 0.05,

^**P < 0.01.

ABC, Adaptive Behaviour Composite; MSEL, Mullen Scales of Early Learning.