Table 4.

Final latent class growth models for parent and examiner prospective dimensional ratings

	Parameter	Estimate	SE	p-value
Examiner Ratings, Group (%)
Group 1 (20.3%)	Intercept	1.991	0.298	<.001
	Linear	–	–	–
Group 2 (80.7%)	Intercept	1.442	0.205	<.001
	Linear	0.013	0.006	.019
Parent Ratings, Group (%)
Group 1 (16.1%)	Intercept	1.048	0.064	<.001
	Linear	–	–	–
Group 2 (66.3%)	Intercept	−0.353	0.218	.105
	Linear	0.040	0.008	<.001
Group 3 (17.6%)	Intercept	0.880	0.547	.108
	Linear	−0.239	0.089	.007

SE = standard error. Ratings on the original scales (ranging from 5–15 for examiners and 3–9 for parents) were rescaled (to 0–10 and 0–6, respectively) by subtracting the scores from the maximum of the corresponding scale, so that zero scores correspond to no deficits in social-communication. Latent class growth models for count data were fitted to the rescaled data.