. Author manuscript; available in PMC: 2010 Mar 1.

Published in final edited form as: Am J Drug Alcohol Abuse. 2009;35(4):233–241. doi: 10.1080/00952990903005957

TABLE 3.

Comparison of mean TLI-CV scores for students who were and were not dependent on alcohol (ALC) or marijuana (MJ) in the first year of college, by sex and race.

	Dependent on neither ALC nor MJ (ALC- MJ-)			Dependent on ALC but not MJ (ALC+ MJ-)			Dependent on MJ (MJ+)			Sig.
	n	Mean	SD	n	Mean	SD	n	Mean	SD
Females, by Race
White	355	−0.34	0.91	67	0.12	0.80	23	0.16	0.74	¹
Black	68	−0.26	1.04	4	0.14	0.44	0	.	.
Asian	48	−0.25	1.14	4	0.31	0.74	1	0.50	.
Other/Multiple	48	0.00	0.94	8	0.27	0.70	2	0.49	0.61

All Females	519	−0.29	0.96	83	0.14	0.77	26	0.20	0.71	¹

Males, by Race
White	347	0.07	0.94	52	0.83	0.81	41	0.59	0.85	¹
Black	40	−0.11	1.09	3	0.20	1.54	0	.	.
Asian	46	0.54	1.02	8	0.51	1.23	3	1.52	0.65
Other/Multiple	32	0.02	1.28	7	0.95	0.57	5	1.42	1.21	²

All Males	465	0.09	1.00	70	0.78	0.87	49	0.73	0.92	¹

Females and Males, by Race
White	702	−0.14	0.95	119	0.43	0.88	64	0.44	0.83	¹
Black	108	−0.21	1.06	7	0.16	0.94	0	.	.
Asian	94	0.13	1.15	12	0.44	1.06	4	1.26	0.73
Other/Multiple	80	0.01	1.08	15	0.59	0.71	7	1.15	1.12	²

All	984	−0.11	0.99	153	0.44	0.88	75	0.55	0.88	¹

Note: The MJ+ category was defined without regard for ALC dependence; 27 individuals were dependent on both ALC and MJ.

Both the MJ+ group and the ALC+MJ- group are significantly different from the ALC-MJ- group (p<.05), but are not significantly different from each other.

The MJ+ group is significantly different from the ALC-MJ- group (p<.05).