Table 3.

Test–retest correlations for all ABI/ABI-S Subscales based on Caregiver Responses to ABI

	Core ASD n = 88	Social Communication n = 88	Restrictive Repetitive Behaviors n = 88	Mood & Anxiety n = 88	Self-regulation n = 88	Challenging Behavior n = 88
ICC estimate	0.89	0.88	0.86	0.84	0.89	0.93
ABI
p-value	< 0.0001	< 0.0001	< 0.0001	< 0.0001	< 0.0001	< 0.0001
95% CI	(0.84, 0.93)	(0.82, 0.92)	(0.79, 0.91)	(0.76, 0.89)	(0.83, 0.92)	(0.90, 0.95)
ICC estimate	0.85	0.77	0.82	0.84	0.88	0.88
ABI-S
p-value	< 0.0001	< 0.0001	< 0.0001	< 0.0001	< 0.0001	< 0.0001
95% CI	(0.78, 0.90)	(0.67,0.85)	(0.74, 0.88)	(0.77, 0.89)	(0.82, 0.92)	(0.83 0.92)

p-value for difference from a one-sample t-test. Pearson correlation based on test and retest values. ICC was 2, 1 variant