Table 3.

Linear regressions predicting rate of skill acquisition between Time 1 and Time 2 in VABS and verbal and nonverbal MSEL (N = 70).

Predicted variable	Predictor (Time 1)	B	95% CI		Standard β	p	R2
			Lower	Upper
VABS ABC	ILSA score	0.184	0.071	0.296	0.472	0.002	0.360
	VABS ABC AE	0.007	−0.005	0.019	0.153	0.257	(p < 0.001)
	MSEL verbal AE	0.006	−0.005	0.017	0.158	0.283
	MSEL nonverbal AE	0.004	−0.014	0.021	0.076	0.664
	ADOS-T total score	0.008	−0.011	0.027	0.119	0.414
	Treatment intensity	−0.001	−0.007	0.004	−0.057	0.596
Verbal MSEL	ILSA score	0.433	0.082	0.784	0.354	0.016	0.304
	VABS ABC AE	−0.012	−0.050	0.027	−0.080	0.548	(p < 0.001)
	MSEL verbal AE	−0.018	−0.052	0.016	−0.154	0.292
	MSEL nonverbal AE	0.054	−0.001	0.109	0.338	0.054
	ADOS-T total score	0.004	−0.056	0.065	0.021	0.885
	Treatment intensity	−0.008	−0.025	0.008	−0.108	0.311
Nonverbal	ILSA score	0.233	0.011	0.456	0.308	0.040	0.298
MSEL	VABS ABC AE	−0.009	−0.034	0.015	−0.104	0.446	(p < 0.001)
	MSEL verbal AE	0.013	−0.009	0.034	0.173	0.250
	MSEL nonverbal AE	−0.009	−0.044	0.025	−0.096	0.587
	ADOS-T total score	0.015	−0.023	0.054	0.117	0.430
	Treatment intensity	− 0.011	−0.021	0.000	− 0.224	0.043	0.166
							(p = 0.001)

ILSA: Interest Level Scoring for Autism; VABS ABC: Vineland Adaptive Behavior Scales, Adaptive Behavior Composite; MSEL: Mullen Scales of Early Development; AE: age equivalent; ADOS-T: Autism Diagnostic Observation Schedule–Toddler.

CI = 95% confidence interval for B.

R² = explained variance when only this variable is included in the model.