Table 2.

Prevalence of anxiety and mood disorders by substance use

		TOTAL	Tobacco Use		Alcohol Use		Cannabis		Other substancesa		Non-medical use of prescription drugs b
		Prevalence (95% CI)	100+ cigarettes% (CI)	p-value	Ever% (CI)	p-value	Ever% (CI)	p-value	Ever% (CI)	p-value	Ever% (CI)	p-value
Lifetime DSM-IV Disorders
Anxiety Disorders	Panic Disorder	0.7 (0.3-1.3)	1.1 (0.4-2.8)	0.211	1.0 (0.4-2.3)	0.287	0.8 (0.1-5.8)	0.815	1.8 (0.2-12.1)	0.321	2.2 (1.0-5.1)	<0.001
	GAD with hierarchy	1.1 (0.7-1.7)	1.7 (0.9-3.5)	0.102	1.3 (0.6-2.5)	0.485	2.4 (0.9-6.4)	0.080	1.9 (0.3-13.3)	0.536	1.7 (0.7-4.0)	0.189
	Social Phobia	2.8 (2.0-4.1)	5.1 (2.7-9.6)	0.011	4.4 (2.4-8.1)	0.044	5.9 (2.7-12.5)	0.021	5.8 (0.8-33.4)	0.438	4.1 (2.0-8.3)	0.120
	Agoraphobia	11.1 (9.2-13.4)	10.0 (6.8-14.5)	0.498	12.2 (9.1-16.1)	0.387	8.8 (5.5-13.7)	0.276	4.0 (0.9-16.5)	0.142	10.8 (8.1-14.3)	0.816
	PTSD	4.5 (1.0-2.2)	2.1 (1.0-4.4)	0.230	2.6 (1.5-4.5)	0.004	5.1 (2.0-12.2)	0.003	10.6 (3.9-26.1)	<0.001	1.3 (0.4-3.6)	0.758
	Any anxiety disorder	14.7 (12.5-17.2)	16.4 (11.8-22.2)	0.388	17.7 (13.5-22.9)	0.063	17.7 (10.9-27.4)	0.405	24.1 (9.9-48.1)	0.219	16.4 (12.7-20.9)	0.312
Mood Disorders	Major Depression	8.6 (7.1-10.3)	12.1 (8.4-17.1)	0.027	11.8 (9.0-15.5)	0.001	15.4 (10.1-22.7)	0.003	27.2 (10.8-53.6)	0.009	12.8 (9.1-17.7)	0.010
Any anxiety or mood disorder		19.7 (17.3-22.3)	23.3 (18.0-29.8)	0.092	24.1 (19.7-19.1)	0.007	26.8 (19.4-35.8)	0.054	42.5 (21.0-67.3)	0.021	24.4 (19.8-19.6)	0.027
12-month DSM-IV Disorders
Anxiety Disorders	Panic Disorder	0.5 (0.2-1.1)	1.1 (0.4-2.8)	0.068	0.7 (0.3-1.9)	0.415	0.8 (0.1-5.8)	0.594	1.8 (0.2-12.1)	0.199	2.2 (1.0-5.1)	<0.001
	GAD with hierarchy	0.7 (0.4-1.3)	1.6 (0.8-3.4)	0.005	1.2 (0.6-2.5)	0.062	2.4 (0.9-6.4)	0.007	1.9 (0.3-13.3)	0.295	0.9 (0.3-2.8)	0.691
	Social Phobia	1.9 (1.3-2.8)	2.9 (1.2-6.5)	0.192	2.7 (1.3-5.3)	0.189	4.3 (1.6-10.5)	0.042	4.8 (0.5-35.8)	0.361	3.3 (1.5-7.1)	0.067
	Agoraphobia	5.1 (3.9-6.6)	4.9 (2.9-8.2)	0.872	4.9 (3.1-7.9)	0.898	5.0 (2.5-9.8)	0.958	0	-	4.1 (2.8-6.0)	0.259
	PTSD	0.3 (0.2-0.7)	5.4 (0.2-1.9)	0.296	0.6 (0.2-1.6)	0.030	1.4 (0.4-4.9)	0.006	1.9 (0.3-12.8)	0.055	0	-
	Any anxiety disorder	7.1 (5.5-9.0)	8.8 (5.8-13.2)	0.102	8.1 (5.3-12.3)	0.340	10.1 (5.5-17.9)	0.181	10.4 (2.5-34.3)	0.532	8.1 (5.3-12.1)	0.384
Mood Disorders	Major Depression	4.3 (3.3-5.6)	7.0 (4.4-10.9)	0.037	6.1 (4.3-8.7)	0.012	11.0 (6.9-17.2)	<0.001	21.0 (7.2-47.5)	0.002	6.7 (4.2-40.7)	0.059
Any anxiety or mood disorder		10.3 (8.5-12.5)	14.7 (10.7-19.8)	0.004	12.9 (9.9-16.8)	0.019	19.6 (13.3-27.7)	0.001	26.6 (10.5-52.6)	0.025	12.9 (9.6-17.2)	0.086

^aCocaine, heroin, opium, glue, LSD, peyote

^bNon-medical use of sedatives, tranquilisers, stimulants, analgesics

Note: GAD= generalised anxiety disorder; PTSD= post-traumatic stress disorder