From: Habituation of the startle reflex depends on attention in cannabis users
Demographics | Controls no CUD | Cannabis users with CUD | χ 2 (df) | p two-tailed |
N | 7 | 11 | Â | Â |
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) |  |  |