Table 2.
Participant characteristics (N=112) at follow-up.
| Moderate drinkers n=32 |
Binge drinkers n=45 |
Extreme binge drinkers n=35 |
|
|---|---|---|---|
|
| |||
| M (SD) or % | M (SD) or % | M (SD) or % | |
| Age | 19.7 (1.4) | 19.3 (1.3) | 19.7 (1.3) |
| Years between baseline and follow-up | 6.7 (1.2) | 6.2 (1.1) | 6.3 (1.3) |
| Years of education completed | 12.8 (1.2) | 12.5 (1.3) | 12.9 (1.2) |
| WRAT Reading Standard Score | 104.2 (13.8) | 104.4 (12.4) | 106.7 (11.2) |
| YSR/ASR Internalizing T-score | 43.7 (8.6) | 42.9 (8.7) | 40.6 (9.7) |
| YSR/ASR Externalizing T-score | 44.2 (9.8) | 46.6 (7.2) | 50.0 (9.5) |
| YSR/ASR Attention Problems T-score | 52.1 (3.5) | 51.2 (2.7) | 52.6 (3.9) |
| BDI-II Total | 2.4 (2.8) | 4.0 (6.4) | 2.8 (5.2) |
| Lifetime drinking days** | 58.5 (115.0) | 127.6 (148.7) | 241.9 (208.8) |
| Past month total drinks ** | 2.5 (4.2) | 13.9 (12.2) | 35.2 (31.0) |
| Average monthly alcohol use days *** | 1.7 (3.0) | 5.0 (4.8) | 8.3 (6.2) |
| Past year average drinks in 24 hours *** | 2.1 (1.2) | 4.7 (2.2) | 7.0 (3.2) |
| Past year peak drinks in 24 hours *** | 4.1 (3.1) | 8.6 (3.1) | 13.0 (3.8) |
| Past 3-month maximum drinks | 2.0 (1.0) | 6.7 (1.2) | 12.1 (3.2) |
| Estimated past 3-month peak BAC (eBAC)*** | .06 (.03) | .22 (.07) | .31 (.08) |
| Lifetime marijuana use days ** | 40.7 (188.7) | 48.9 (89.8) | 181.5 (272.9) |
| Average monthly marijuana use days * | 1.5 (5.6) | 3.7 (8.0) | 7.4 (9.8) |
| Average monthly other drug use days | 0.0 (0.0) | 0.0 (0.0) | 0.0 (0.2) |
| Past month tobacco use days ** | 0.0 (0.2) | 2.0 (5.5) | 6.2 (10.4) |
| DSM-5 Alcohol Use Disorder | |||
| Mild * | 0.0% | 17.8% | 22.9% |
| Moderate or Severe | 0.0% | 0.0% | 0.0% |
| List A Trial 1 | 0.0 (0.9) | 0.1 (1.0) | −0.2 (0.8) |
| List A Trial 5 | 0.5 (0.9) | 0.2 (1.0) | 0.0 (0.9) |
| List A Trials 1–5 Total (T-score) * | 57.8 (8.8) | 55.0 (9.7) | 53.0 (6.5) |
| Proactive Interference | −0.1 (1.0) | −0.4 (1.0) | −0.3 (1.2) |
| Short Delay Free Recall * | 0.7 (0.7) | 0.3 (1.0) | 0.2 (1.1) |
| Short Delay Cued Recall* | 0.7 (0.6) | 0.4 (0.9) | 0.2 (0.8) |
| Long Delay Free Recall | 0.5 (0.8) | 0.2 (1.0) | 0.1 (1.1) |
| Long Delay Cued Recall | 0.6 (0.6) | 0.3 (1.0) | 0.1 (1.0) |
| Learning Slope | 1.6 (0.5) | 1.5 (0.5) | 1.5 (0.5) |
| Retention | −0.2 (0.7) | −0.1 (0.9) | −0.2 (0.8) |
| Percent Recall from Word List Recency | 0.0 (0.7) | 0.1 (0.9) | 0.4 (0.9) |
| Recognition Trial Total Hits | −0.2 (0.5) | 0.0 (0.5) | −0.3 (0.8) |
| Total Recognition Discriminability | 0.5 (0.6) | 0.5 (0.7 | 0.2 (0.8) |
Significant group (moderate vs. extreme-binge) difference, p < .05
Significant group (moderate vs. extreme-binge, and binge vs. extreme-binge drinkers) difference, p < .05
Significant group (moderate vs. binge, moderate vs. extreme-binge, and binge vs. extreme-binge drinkers) difference, p < .05
YSR=Youth Self Report, ASR=Adult Self Report; BAC= blood alcohol concentration; DSM-5= Diagnostic and Statistical Manual of Mental Disorders, 5th ed.
Note: Proactive interference = list B – list A trial 5; Retention = number of words retained from list A trial 5 to short delay recall; Learning slope = average number of new words learned per trial. All verbal learning and memory indices are in standard (z) scores; List A Trials 1–5 Total is in T-score.