Table 2. Neurological and Non-neurological Abnormality at 4 Month, 1 Year and 7 Years of Age by Perinatal Problems.

Neurological assessment	LBW		Small head circumference		Low Apgar scores
	AOR (95% CI)	p	AOR (95% CI)	p	AOR (95% CI)	p
4 month assessment	1.0		1.0		1.0
None (n=1615)
Suspect (n=509)	1.8 (1.4-2.4)	<.0001	1.9 (1.5-2.4)	<.0001	1.7 (1.2-2.3)	.003
Defnite (n=27) 2151	4.4 (1.8-10.8)	.001	3.9 (1.6-9.5)	.002	4.6 (1.8-12.0)	.002
1 year assessment	1.0		1.0		1.0
None (n=1828)
Suspect (n=233)	2.9 (2.1-4.0)	<.0001	2.0 (1.5-2.6)	<.0001	1.6 (1.1-2.5)	.02
Defnite (n=28) 2089	5.9 (2.7-12.6)	.0001	4.6 (2.2-10.0)	<.0001	4.4 (1.9-10.2)	.001
7 year assessment	1.0		1.0		1.0
None (n=1722)
Suspect (n=322)	1.6 (1.2-2.2)	.002	1.4 (1.1-1.8)	.02	1.5 (1.0-2.2)	.04
Defnite (n=74) 2118	1.6 (.86-2.9)	.14	1.9 (1.1-3.2)	.02	3.2 (1.8-5.7)	.0001
Non-neurological assessment	LBW	p	Small head circumference		Low Apgar scores
	AOR (95% CI)		AOR (95% CI)	p	AOR (95% CI)	p
4 month assessment	1.0		1.0		1.0
None (n=1509)
Minor (n=448)	1.2 (.86-1.7)	.27	1.3 (.99-1.7)	.06	1.1 (.73-1.6)	.69
Defnite (n=183) 2140	1.9 (1.3-2.8)	.002	1.6 (1.1-2.3)	.01	1.3 (.75-2.1)	.38
1 year assessment	1.0		1.0		1.0
None (n=1494)
Minor (n=470)	1.1 (.79-1.6)		1.1 (.79-1.5)		1.1 (.78-1.6)
Defnite (n=122) 2086	2.1 (1.2-3.8) .01	.50	1.1 (.63-1.9) .77	.65	1.2 (.67-2.2) .52	.54
7 year assessment None (n=1579)	1.0		1.0	.21	1.0 1.1 (.79-1.7)	.46
None (n=1579)
Minor (n=412)	1.5 (1.0-2.2)	.03	1.2 (.89-1.7)
Defnite (n=127) 2118	1.2 (.64-2.2)	.62	1.2(.71-2.0)	.50	1.3(.72-2.4)	.39

NB: N may vary due to missing values - 2.9% (n=62) for 1 year and 1.5% (n=33) for the 7 year has missing information on neurological abnormality. 0.5% (n=11), 3.0% (n=65), and 1.5% (n=33) at 4 months, 1 year, and 7 year, respectively, have missing information on non-neurological abnormality.

AOR = adjusted odd ratios. CI = confidence interval. Poverty, sex and race were statistically controlled for.