Table 3.

Model predicting LDS (Language Development Survey) average length of phrase at 36 months from overall target latency and demographic factors.

Parameter	Estimate	SE	t	p
Model: All trials
Intercept	2.31	2.47	0.94	0.35
Overall Target Latency	−0.0011	0.00067	−1.68	0.096
SES	0.046	0.023	2.027	0.045*
Sex	0.55	0.41	1.36	0.18
Ethnicity	−0.60	1.28	−0.47	0.64
Race	0.32	0.36	0.89	0.38
Twin Birth Order	0.033	0.40	0.082	0.93
Model: Verb trials only
Intercept	1.59	2.42	0.66	0.51
Verb Target Latency	−0.00060	0.00055	−1.10	0.27
SES	0.050	0.023	2.18	0.032*
Sex	0.60	0.41	1.48	0.14
Ethnicity	−0.38	1.29	−0.30	0.77
Race	0.36	0.36	0.99	0.32
Twin Birth Order	−0.025	0.41	−0.060	0.95

^*p < .05