Table II.

Substance Use among HIV+ Adults with and without Cannabis Use

Cannabis Use†
Age of cannabis initiation	17.2 (6.4)	20.6 (5.4)	0.01
Days since last cannabis use	4.5 (2.1)	4,456 (4525)	<0.0001
Days used in past 30 days	19.0 (11.6)	0 (0)	<0.0001
Amount* used in lifetime	10,278.1 (15,406.1)	42.8 (94.4)	0.01
Amount* used in past 12 months	448.6 (680.4)	0.15 (0.30)	0.01
Amount* used in past 30 days	31.7 (48.0)	0 (0)	0.01
9-carboxy-THC, ng/mL	314.6 (506.6)	0 (0)	<0.0001
Other Substance Use†
Alcohol, times used in past 30 days	3.9 (6.2)	3.6 (6.7)	0.84
Nicotine, times used in past 30 days	13.1 (14.9)	6.1 (11.3)	0.06
Current DSM-IV Substance Use Disorder‡
Cannabis Abuse	4 (9.8)	0 (0)	0.01
Cannabis Dependence	4 (9.8)	0 (0)	0.01
Alcohol Abuse	1 (2.4)	0 (0)	0.38
Alcohol Dependence	0 (0)	0 (0)	–
Lifetime DSM-IV Substance Use Disorder‡
Cannabis Abuse	8 (19.5)	0 (0)	0.0002
Cannabis Dependence	5 (12.2)	1 (1.5)	0.02
Alcohol Abuse	11 (26.8)	10 (15.2)	0.14
Alcohol Dependence	2 (4.9)	4 (6.1)	0.79
Sedative Abuse	1 (2.4)	0(0)	0.38
Sedative Dependence	2 (4.9)	0 (0)	0.14
Stimulant Abuse	1 (2.4)	1 (1.5)	1.00
Stimulant Dependence	2 (4.9)	1 (1.5)	0.56
Opioid Abuse	0 (0)	0 (0)	–
Opioid Dependence	0 (0)	0 (0)	–
Cocaine Abuse	1 (2.4)	0 (0)	0.38
Cocaine Dependence	3 (7.3)	6 (9.1)	0.75
Hallucinogen Abuse	2 (4.9)	0 (0)	0.14
Hallucinogen Dependence	1 (2.4)	0 (0)	0.38

^†mean (standard deviation)

^*amount in grams

^‡n (%)