TABLE 2.
DUSI-R APD, DD, and BIS/BAS results.
| All participants (N = 70) |
SI (n = 27) |
SN (n = 43) |
Test statistic | p | |
|
DUSI-R APD Mean (SD) N = 69 |
16.04 (10.28) |
n = 26 19 (11.5) |
14.25 (9.1) |
t(67) = −1.9 |
0.031* |
|
DD, AUClogd Mean (SD) N = 61 |
0.55 (0.19) |
n = 25 0.54 (0.19) |
n = 36 0.55 (0.19) |
t(59) = 0.22 |
0.83 |
|
BAS Drive Mean (SD) |
9.7 (2.7) |
10.7 (2.4) |
9.1 (2.7) |
t(68) = −2.6 |
0.012† |
|
BAS Fun-seeking Median (Range) |
11 (4–15) |
13 (6–15) |
11 (4–15) |
U = 362.5 |
0.008† |
|
BAS Reward Responsivity Median (Range) |
18 (14–20) |
18 (14–20) |
18 (14–20) |
U = 516.5 | 0.44 |
|
BIS Median (Range) |
20 (12–27) |
20 (12–24) |
18 (15–27) |
U = 552.5 | 0.74 |
Group comparisons for the DUSI-R APD used a one-tailed independent samples t-test. Comparisons for AUClogd and the BAS Drive scale used two-tailed independent samples t-tests; and those for the BAS Fun Seeking and Reward Responsivity scales and the BIS were conducted using two-tailed Mann–Whitney U-tests. *p < 0.05; †p < 0.0167. Bonferroni-corrected threshold for BAS sub-scales. DUSI-R APD, Drug Use Screening Inventory, Revised, Absolute Problem Density; DD, AUC, delay discounting, area under the curve; BAS, Behavioral Activation System; BIS, Behavioral Inhibition System.