. Author manuscript; available in PMC: 2013 Mar 31.

Published in final edited form as: J Autism Dev Disord. 2007 Dec 5;38(6):1104–1111. doi: 10.1007/s10803-007-0495-9

Table 4.

HLM growth trajectory model EDI social symptoms, 22–24 months

Growth parameter	Fixed effect	Coefficient	SE	t (df)	p
HC z-score at 12 months	Intercept	0.67	0.15	4.55 (70)	<0.01
HC z-score at 12 months	EDI-S	0.08	0.04	1.87 (70)	0.07
Slope (birth to 12 months)	Intercept	0.08	0.01	6.86 (70)	<0.01
Slope (birth to 12 months)	EDI-S	0.00	0.00	0.70 (70)	0.48
Slope (12–24 months)	Intercept	0.01	0.01	0.86 (70)	0.40
Slope (12–24 months)	EDI-S	−0.01	0.00	−2.01 (70)	0.048