Table 2.

Concordance correlation coefficients estimated by variance components analysis, controlling for age and site

Domain	Subscale	CCC	CCC 95% CI lower bound	CCC 95% CI upper bound
Adaptive Behavior Composite	Adaptive Behavior Composite	0.85	0.79	0.89
Communication	Receptive	0.71	0.62	0.78
	Expressive	0.75	0.67	0.82
	Written	0.78	0.70	0.84
	Communication	0.78	0.70	0.84
Daily Living Skills	Personal	0.75	0.67	0.82
	Domestic	0.87	0.81	0.91
	Community	0.90	0.86	0.93
	Daily Living Skills	0.79	0.72	0.85
Socialization	Interpersonal Relationships	0.82	0.74	0.87
	Play and Leisure	0.90	0.85	0.93
	Coping Skills	0.78	0.70	0.84
	Socialization	0.84	0.78	0.89
Motor Skills	Gross Motor	0.78	0.64	0.87
	Fine Motor	0.91	0.85	0.95
	Motor Skills	0.86	0.76	0.92

Note: CCC = concordance correlation coefficient; CI = confidence interval