Table 4.

Bivariate Growth Curve Model with Direct Intervention Effects on Change from Baseline (slope) for the MONSI-CC and the BOSCC and Indirect Intervention Effect on the BOSCC via the MONSI-CC (parameter labels in square parentheses correspond to Figure 3)

	Caregiver MONSI-CC Scores			Child BOSCC Social Communication Scores
	Estimate	95% CI	p-value	Estimate	95% CI	p-value
Coefficient
Intercept factor variance	1.0			1.0
Intercept loading	5.67	4.18 to7.16	<.001	3.41	2.71 to 4.12	<.001
Error variance	93.0			19.3
Intervention effect per month	1.99 [a1]	0.97 to 3.01	<.001	−0.15 [c’1]	−0.66 to 0.36	0.561
Caregiver on child				−0.12 [b1]	−0.18 to −0.05	<.001
Baseline/Intercept covariates
ADOS CSS	−0.12	−0.25 to 0.00	.056	0.13	0.02 to 0.24	.021
Language level	0.18	−0.05 to 0.41	0.127	−0.66	−0.90 to −0.42	<.001
Nonverbal IQ	0.27	−0.06 to 0.60	0.114	−0.50	−0.80 to −0.21	.001
Age	1.69	−2.33 to 5.71	0.410	−1.66	−5.09 to 1.77	0.343
ESDM Study	2.10	12.5 to 2.94	<.001	1.22	0.59 to 1.84	<.001
JASPER Study	1.38	0.36 to 2.40	.008	1.03	0.17 to 1.88	.019

Note. MONSI-CC = Measure of NDBI Strategy Implementation-Caregiver Change; BOSCC = Brief Observation of Social Communication Change.

^aMONSI-CC and BOSCC Baseline/Intercept correlation −0.49; [a1][b1][c’1] are parameters shown on Figure 3.