Table 5.

Linear Regression Models of MDI at 30 Months by Language Delays Controlling for Demographics and Feeding Status: English Language Only

Model/Variable	Reg coeff.	SE	p
Receptive
Model 1: Receptive
Severe Delay	−21.80	1.81	< 0.001
Mild Delay	−11.17	1.52	< 0.001
Model 2: Receptive + MDI
Severe Delay	−15.36	1.83	< 0.001
Mild Delay	−7.33	1.46	< 0.001
MDI at 18 months	0.38	0.04	< 0.001
Model 3: Receptive + MDI (No CP)
Severe Delay	−15.03	1.85	< 0.001
Mild Delay	−7.79	1.48	< 0.001
MDI at 18 months	0.35	0.04	< 0.001
Expressive
Model 4: Expressive
Severe Delay	−23.83	1.97	< 0.001
Mild Delay	−12.47	2.25	< 0.001
Model 5: Expressive + MDI
Severe Delay	−16.78	2.01	< 0.001
Mild Delay	−9.30	2.06	< 0.001
MDI at 18 months	0.40	0.06	< 0.001
Model 6: Expressive + MDI (No CP)
Severe Delay	−16.48	1.99	< 0.001
Mild Delay	−9.60	2.06	< 0.001
MDI at 18 months	0.39	0.06	< 0.001
Receptive and Expressive
Model 7: Expressive + Receptive + MDI
Severe Receptive Delay	−10.59	2.98	< 0.001
Mild Receptive Delay	−2.35	1.94	0.229
Severe Expressive Delay	−14.71	2.16	< 0.001
Mild Expressive Delay	−9.33	2.11	< 0.001
MDI at 18 months	0.35	0.06	< 0.001

Note: Reference category is no delay. Each model controls for feeding dysfunction at 18 months, treatment condition with Glutamine, gender, birth weight, gestational age, race/ethnicity, maternal education, household income, postnatal steroids, BPD, and IVH/PVL.