Table 4.

Logistic Regression Model of Expressive Language Delay at 30 Months: English Language Only

Variable	% with Expressive Delay	OR	95% CI	p
Feeding status at 18 months
Eats with assistance/tube fed	67	2.52	1.26, 5.03	0.009
Feeds self	42	REF
Treatment condition
Glutamine	53	0.92	0.49, 1.74	0.803
Control	53	REF
Gender
Male	54	0.85	0.44, 1.64	0.633
Female	52	REF
Birth weight (kg)	--	0.75	0.05, 12.11	0.836
Gestational age	--	1.06	0.86, 1.32	0.588
Race/Ethnicity
White	34	0.23	0.12, 0.46	< 0.001
Non-White	75	REF
Maternal Education Level
Less than high school	70	1.67	0.59, 4.68	0.334
High school graduate	56	REF
Some college or more	45	0.90	0.42, 1.92	0.784
Income
$50,000 or more	33	0.43	0.17, 1.07	0.070
$20,000–$49,999	55	0.73	0.31, 1.68	0.454
< $20,000	74	REF
Postnatal steroids
Yes	55	0.90	0.40, 2.04	0.809
No	52	REF
BPD
Yes	50	1.12	0.55, 2.28	0.759
No	56	REF
IVH/PVL
Yes	60	1.19	0.32, 4.41	0.800
No	53	REF

Note: N=208. REF=reference category. Percent represents the proportion of children with characteristic who have an expressive language delay.