Table 1.

Neonatal Characteristics of Infants Included and Excluded from the Study by Cocaine Exposure

	Cocaine Exposed			Comparison
	Included (n = 360)	Excluded (n = 183)	p	Included (n = 480)	Excluded (n = 250)	p
Gestational age (wk)	36.0 (4.1)	36.2 (3.7)	.640	36.3 (4.1)	36.4 (4.0)	.663
Birth weight (g)	2546 (780)	2587 (656)	.544	2675 (881)	2699 (835)	.719
Length (cm)	46.3 (5.0)	46.6 (3.8)	.385	44.0 (5.3)	47.20 (5.1)	.547
Head circumference (cm)	31.9 (2.9)	32.1 (2.7)	.513	32.2 (3.2)	32.3 (3.0)	.547
Apgar 1 (median & range)	8 (1–10)	8 (1–10)	.033	8 (0–9)	8 (1–9)	.269
Apgar 5 (median & range)	9 (3–10)	9 (2–10)	.441	9 (4–10)	9 (1–10)	.118
Male, %	190 (52.8%)	98 (53.6%)	.864	231 (48.1%)	114 (45.6%)	.517
First Born, %	31 (8.6%)	19 (10.4%)	.500	134 (27.9%)	89 (35.6%)	.032