Table 1.
Demographic characteristics of cannabis-dependent individuals who do not smoke tobacco (C), cannabis-dependent individuals who smoke tobacco (CT), cannabis-naïve, nicotine-dependent individuals who smoke tobacco (T), and healthy controls (HC).
| C (n=19) | CT (n=23) | T (n=24) | HC (n=21) | p-values | |
|---|---|---|---|---|---|
| Sex, n(%), male | 10 (53) | 18 (78) | 14 (58) | 14 (67) | 0.32 |
| Age | 28 (7) | 30 (9) | 36 (12) | 31 (9) | 0.04a |
| Nicotine dependence (FTND) | - | 4.6 (1.2) | 4.3 (1.6) | - | 0.39b |
| Cigarettes per day | - | 7.2 (6.5) | 14.2 (5.3) | - | 0.001b |
| Pack years | - | 4.3 (4.8) | 11.6 (9.4) | - | 0.002b |
| Age of onset of cannabis use | 19 (5) | 17 (4) | - | - | 0.23c |
| Cannabis use, years | 9 (5) | 13 (8) | - | - | 0.08c |
| Cannabis use, past 30 days | 27 (4) | 25 (6) | - | - | 0.13c |
| Cannabis use, grams/week | 14 (11) | 20 (10) | - | - | 0.07c |
| Alcohol use, past 30 days | 2 (3) | 3 (4) | 2 (4) | - | 0.52d |
a
p-values for comparison between C and T groups
b
p-values for comparison between CT and T groups
c
p-values for comparison between C and CT groups
d
p-values for comparison between C, CT, and T groups
Notes: Means (SD); FTND, Fagerstrom Test of Nicotine Dependence