Table 1.

Mean and SEM for control and cannabis groups on demographic and drug use history

	Control	Cannabis
	(n=16)	(n=16)
Age	25.2 ± 1.3	24.6 ± 1.5
Years of Education	17.7 ± 0.7	16.2 ± 0.7
Verbal Intelligence Score (NART)	124.0 ± 0.8	123.3 ± 0.8
Beck Depression Inventory II Score	4.0 ± 0.7	5.5 ± 1.1
Females/Males	1/15	1/15
Years of Alcohol Use	8.7 ± 1.4	8.9 ± 1.4
Alcohol Use in Last Month (no. days)	6.2 ± 1.4	9.3 ± 1.8
Alcohol Use Age Onset (Years)	16.2 ± 0.6	15.8 ± 0.5
Cannabis Use (Years)	0.0 ± 0.0	8.2 ± 1.3
Life-time Joints (number)	3.0 ± 0.6	11628.8 ± 5993.4
Days of Use in Last Month (number)	0.0 ± 0.0	19.2 ± 2.6
Joints in Last Month (number)	0.0 ± 0.0	76.3 ± 17.7
Cannabis Use Age Onset (years)	17.0 ± 0.3	16.4 ± 0.7
Cannabis Abstinence (hours)		38.0 ± 47.7
Cannabis Withdrawal Score (out of 32)		9.3 ± 2.2
Cannabis Craving Scores (each item out of 21)
Compulsivity		6.0 ± 1.0
Emotionality		8.4 ± 1.1
Expectancy		11.3 ± 1.3
Purposefulness		10.1 ± 1.3