Table 1.

Participant Demographics and Cannabis Use History

Demographic and substance use characteristics among women (n=45) and men (n=91) included in withdrawal analyses. Data shown are group means (±SD) or % of subjects. Groups were compared using t-tests for continuous variables and Fisher’s exact tests for categorical variables. Significant (p < 0.05) sex differences are highlighted with bold text.

Characteristic	Women (n=45)	Men (n=91)	p-value
Demographics
Age (years)	34.1 (11.1)	32.5 (10.0)	0.41
Race (% Black)	87	84	0.80
Ethnicity (% Hispanic/Latino)	7	4	0.69
Education (years)	12.9 (1.5)	12.4 (1.8)	0.14
Employed (% full-time, part-time, or student)	31	43	0.2
Marital Status (% Married)	2	6	0.66
Substance use
Cannabis
Age first use (years)	16.2 (4.5)	14.2 (4.5)	0.01
Years first use to regular use	2.2 (3.8)	2.5 (3.5)	0.67
Days used in past 90 days	85.1 (9.6)	80.0 (14.1)	0.03
Amount used per day in past 90 days (grams)	3.0 (2.9)	2.8 (2.6)	0.71
Cannabis dependent (%)	80	77	0.83
Number of lifetime quit attempts	5.9 (8.7)	8.1 (15.6)	0.39
Made quit attempt in past year (%)	78	70	0.42
Other substances used in past 90 days
Tobacco (%)	76	71	0.86
Average cigaretes per day (among smokers)	5.9 (6.7)	5.9 (5.0)	0.99
Alcohol (%)	73	74	0.55
Average drinks per week (among drinkers)	4.2 (6.4)	4.6 (5.9)	0.74
Opioids (%)	2	11	0.10
MDMA (%)	7	5	1.00
Cocaine (%)	7	2	0.33
Hallucinogins (%)	2	0	0.33
Amphetamines (%)	0	1	1.00
Synthetic Cannabinoids (%)	0	1	1.00
Sedatives/Hypnotics (%)	0	0	-

Note. Cannabis dependence based on DSM-IV-TR criteria.