TABLE 2.

Odds ratios (95% confidence intervals in parentheses) from logistic regression analyses of comorbid trajectories of tobacco and marijuana use to predict psychological difficulties.

Comorbid Trajectories	Psychological Difficulties
	Antisocial behavior		Poor self-control	Internalizing problems
	Risk Taking	Rebellion	Impulsivity	Depression	Anxiety	Interpersonal Hypersensitivity
II vs. NN	1.8 (0.6, 5.0)	2.5 (0.8, 7.8)	2.0 (0.9, 4.3)	2.4 * (1.0, 5.7)	1.1 (0.5, 2.9)	1.2 (0.5, 3.0)
LI vs. NN	1.3 (0.4, 4.0)	3.3 * (1.1, 10.3)	0.8 (0.4, 2.0)	1.4 (0.5, 3.7)	1.0 (0.4, 2.7)	1.0 (0.4, 2.6)
CM vs. NN	3.1 (0.9, 10.3)	7.9 *** (2.5, 25.2)	2.9 * (1.2, 6.8)	4.0 ** (1.5, 10.6)	2.7 * (1.0, 7.2)	2.8 * (1.1, 7.4)
IL vs. NN	11.1 *** (3.9, 31.5)	7.8 *** (2.4, 25.8)	1.4 (0.5, 4.2)	4.6 ** (1.6, 13.1)	1.8 (0.5, 6.0)	2.2 (0.8, 6.4)
CC vs. NN	8.7 *** (4.0, 18.8)	6.4 *** (2.6, 15.9)	2.5 ** (1.4, 4.7)	3.2 ** (1.6, 6.7)	2.4 * (1.2, 4.7)	2.2 * (1.1, 4.4)

Note 1.

^*P<.05,

^**P<.01,

^***P<.001

2 Gender, ethnicity, age at T4, education level at T4, and/or T1 psychological difficulty variable were statistically controlled.