Table 2 Participant characteristics depending on lifetime CUD (dependence/abuse)

Demographics

Controls no CUD

Cannabis users with CUD

χ ² (df)

p _two-tailed

N

7

11

Male/Female

6/1

8/3

.42 (1)

.518

Right/Left-handed

5/2

9/2

.27 (1)

.605

M ± SD (range)

M ± SD (range)

t (df)

p _two-tailed

Age (years)

34 ± 9 (18–43)

29 ± 8 (19–44)

1.23 (16)

.238

IQ

104 ± 10 (86–115)

103 ± 10 (79–117)

.25 (16)

.809

Education (years)

13 ± 2 (10–14)

13 ± 2 (9–17)

-.64 (16)

.531

Alcohol/week (last 12 months)

3 ± 3 (0–10)

10 ± 8 (0–24)

−2.53 (15)

.023*

Cigarettes/day (last 12 months)

0 ± 0 (0–.1)

3 ± 1 (0–10)

−2.42 (10)

.036*

Coffee cup/day (last 12 months)

4 ± 1 (0–15)

2 ± 1 (0–10)

.56 (16)

.586

Duration of use (years)

-

13 ± 8 (2–27)

Age of first use (years)

-

16 ± 3 (13–21)

Last use (hours before testing)

-

9 ± 5 (2–13)

Urine cannabinoids (μg/l)

-

692 ± 910 (0–2000)

SDS score

-

4 ± 2 (0–7)