Table 1.
Demographic, drinking, personality and neuropsychological variables.
| LDs | BDs | U values | |
|---|---|---|---|
| N (females) | 26 (14) | 25 (11) | 164(chi2) |
| Age | 18±0.8 | 18±0.4 | 650 |
| Est BAC | 0.017±0.02 | 0.17±0.072 | 702** |
| Length of drinking (mos) | 4.55±3.71 | 20.67±10.45 | 205.5** |
| Age of drinking onset | 16.6±1.01 | 14.92±1.08 | 83* |
| Drinking days past mo. | 1.5±1.8 | 7.82±2.2 | 184.5** |
| Drinks on a regular day | 1.1±0.5 | 4±1.7 | 267.5** |
| Drinks on a heavy day | 2.4±1.1 | 5.8±2.6 | 248.5** |
| Drunk days past mo. | 0 | 4.84±2.56 | 688.5** |
| Total AUDIT score | 1.7±1.3 | 7.7±1.9 | 648** |
| Sens. Seeking –Tot. | 16.29±3.5 | 21.48±3.53 | 257** |
| Thrill & Adventure | 5.76±2.66 | 7.58±2.35 | 278 |
| Disinhibition | 2.48±1.22 | 5.17±1.58 | 322** |
| Experience Seeking | 5.56±1.58 | 5.43±1.77 | 175 |
| Boredom Suscept | 2.54±1.81 | 3.17±1.19 | 222 |
| Barrat Impuls. - Tot. | 38.87±10.6 | 44.38±11.5 | 241 |
| Emotional | 14.42±3.81 | 12.84±3.95 | 261.5 |
| Motor | 14.77±6.55 | 12.96±5.53 | 320 |
| Non-planning | 15±4.53 | 14.2±4.95 | 242 |
| Attention D2 - Total | 498.23±64.1 | 468.84±75.26 | 157 |
| IGT – total earnings | 12.89±21.85 | 11.15±20.5 | 216 |
| IGT – total losses | 19.03±17.25 | 21.6±29.3 | 204 |
| Sleeping hours previous night | 7.2±0.98 | 7.04±1.17 | 257.5 |
Mean±SD are listed for all variables. Group comparisons were calculated with a nonparametric Mann-Whitney U test except for age which was tested with chi2. LDs: light drinkers; BDs: binge drinkers; estBAC: the highest estimated Blood Alcohol Concentration reached in the past month; AUDIT: Alcohol Use Disorders Identification Test; IGT: Iowa Gambling Task.
Significance level is indicated as follows:
*
p < 0.05
**
p < 0.01
***
p < 0.001