Assessing Latent Effects of Prenatal Cocaine Exposure on Growth and Risk of Cardiometabolic Disease in Late Adolescence: Design and Methods

Table 1

Characteristics of infants with and without prenatal cocaine exposure and their mothers at enrollment in the Miami Prenatal Cocaine Study.

Characteristic	Non-cocaine-exposed infants	Cocaine-exposed infants
	(n = 223)	(n = 253)
Maternal characteristics
Maternal age, mean (SD), y*	23.8 (5.4)	28.7 (4.8)
Education, mean (SD), y	11.3 (1.4)	11.2 (1.5)
Unemployed, %*	82	95
Never married, %	89	90
Primigravida, %*	23	6
Prenatal care ≥ 4 visits, %*	83	68
Infant characteristics
Birth weight, mean (SD), g*	3303 (504)	2971 (474)
Birth length, mean (SD), cm*	50.7 (2.3)	48.9 (2.5)
Birth head circumference, mean (SD), cm*	33.8 (1.5)	33.0 (1.6)
Gestational age, mean (SD), weeks*	39.7 (1.4)	39.4 (1.4)
Male, %	50	48

* P < 0.01.