Table 2.

Drug exposure in PCE and NCOC groups by trimester as measured by the Time Line Follow Back Interview

	Trimester	Prenatal Cocaine Exposure (PCE)				Non-Cocaine Other Drugs (NCOC)				F	p
		n	Mean	SE	Range	n	Mean	SE	Range
NICOTINE
Cigarettes/day	1	28	13.72	1.74	0–40	26	8.79	1.60	0–40	4.31	.0429
	2	28	9.68	1.90	0–40	26	5.21	1.61	0–40
	3	27	6.59	1.68	0–40	25	2.66	0.67	0–10	4.43	.0403
ALCOHOL
Drinks/week	1	10	5.72	6.02	0–42	17	10.77	4.62	0–84
	2	10	4.30	2.66	0–42	17	4.30	2.04	0–14
	3	10	0	0	0	17	1.53	0.72	0–14
Binges/week	1	9	1.1	0.78	0–7	11	1.66	0.57	0–7
	2	9	0.8	0.78	0–7	11	0.64	0.64	0–7
	3	9	0	0	0	11	0.64	0.64	0–7
OPIATESa
Times/week	1	4	3.25	1.65	1–7	3	7.0	0	7–7
	2	4	2.50	1.55	1–7	3	7.0	0	7–7
	3	4	2.13	1.66	1.5–7	3	4.67	2.33	0–7
MARIJUANAb
Joints/week	1	10	2.75	1.43	0–14	12	4.97	1.80	0–14
	2	10	2.28	1.37	0–14	12	2.81	1.65	0–14
	3	10	1.90	1.39	0–14	12	1.87	1.52	0–14
COCAINE
Times/trimester	1	33	39.97	6.36	0–99	0
	2	32	20.56	5.13	0–93	0
	3	32	9.70	4.09	0–91	0

SE: standard error of the mean;

^a4 PCE, 1 NCOC missing opiate by trimester data;

^b3PCE, 5 NCOC missing marijuana by trimester data