. Author manuscript; available in PMC: 2011 May 12.

Published in final edited form as: J Pediatr Psychol. 2005 Mar 23;31(1):15–26. doi: 10.1093/jpepsy/jsj022

Table I.

Maternal and Infant Characteristics and Cocaine Use

	Abstainers (n = 64)		Light users (n = 55)		Heavy users (n = 22)		F
	M	SD	M	SD	M	SD	F
Maternal characteristics
Age (years)	29.3^a	5.05	32.42^a	5.25	31.41	5.59	4.66^**
Education (years completed)	12.34^a	1.78	11.89	1.89	11.0	2.05	4.29^*
S.E.S. (Hollingshead two-factor)	3.66^a	1.84	2.84^a	1.4	2.05^a	.95	9.86^**
Parity	3.44^a	1.71	4.32^a	2.01	3.77	2.14	3.16^*
Prenatal care (number of visits)	14.41	7.7	14.22	7.89	10.53	7.55	1.95
Number of days cocaine used during pregnancy	0^a	0	19.28^a	25.98	89.93^a	84.07	49.41^**
Hair analysis—level of cocaine in last 90 days	0^a	0	63.38^a	85.69	752.07^a	1097.22	18.16^**
Infant characteristics
Age at 4– to 8-week visit (weeks)	5.59	1.34	5.80	2.08	5.76	1.62	.78
Gestational age (weeks)	39.30^a	1.37	38.48^a	1.8	38.18^a	2.06	4.73^**
Weight at 1 month of age (grams)	5052.92	2598.75	4290.18	851.47	5352.36	1077.56	2.21
Length at 1 month of age (centimeters)	53.95^a	3.72	52.19^a	4.53	52.14^a	3.47	3.41^*
Head circumference at 1 month of age (centimeters)	37.44	1.81	36.99	1.78	36.57	1.84	2.16
Apgar 1	8.33	1.41	8.3	1.30	8.55	0.67	0.29
Apgar 5	8.87	0.48	8.88	0.63	9.00	0	0.56
Obstetrical complications scale (OCS)	91.42^a	11.81	82.60^a	12.85	81.91^a	15.76	7.40^**
Gender (% male)	45		51		46

Where the significant differences lie.

p < 0.05.

^**

p< 0.01.