Table 1.
Group Comparisons on Demographic Characteristics, Diagnostic Information, and Self-Reported Drinking Habits
| Group
|
t | d | ||||
|---|---|---|---|---|---|---|
| Control (n = 19) | ADHD (n = 19) | |||||
| Mean | SD | Mean | SD | |||
| Demographic | ||||||
| Age | 23.6 | 2.1 | 22.0 | 1.2 | 2.9** | 0.97 |
| Gender (% male) | 78.9 | 73.7 | ||||
| Education | 16.0 | 1.8 | 16.2 | 1.4 | 0.4 | 0.13 |
| IQ: Verbal | 104.4 | 12.7 | 108.7 | 10.6 | 1.1 | 0.37 |
| IQ: Nonverbal | 104.5 | 14.1 | 106.8 | 15.2 | 0.5 | 0.17 |
| IQ: Composite | 105.4 | 13.7 | 109.2 | 11.7 | 0.9 | 0.30 |
| Diagnostic | ||||||
| CAARS | ||||||
| DSM-IA | 46.8 | 8.5 | 69.9 | 12.2 | 6.8*** | 2.26 |
| DSM-HI | 42.6 | 8.0 | 62.9 | 15.4 | 5.1*** | 1.70 |
| DSM-Tot | 44.3 | 8.3 | 70.4 | 14.6 | 6.8*** | 2.26 |
| DSM | 1.4 | 2.5 | 6.8 | 2.5 | 8.4*** | 2.80 |
| AASRS | 8.1 | 5.0 | 18.9 | 3.8 | 7.5*** | 2.50 |
| BIS | 63.7 | 10.6 | 77.4 | 7.6 | 4.6*** | 1.53 |
| Drinking Habits | ||||||
| TLFB | ||||||
| Drinking Days | 24.5 | 12.7 | 31.7 | 17.5 | 1.5 | 0.50 |
| Total Drinks | 149.5 | 109.3 | 192.7 | 127.5 | 1.1 | 0.37 |
| Drunk Days | 9.9 | 7.7 | 13.5 | 11.1 | 1.3 | 0.43 |
| Binge Days | 14.0 | 10.2 | 18.7 | 11.8 | 1.2 | 0.40 |
Note. For IQ: Verbal and IQ: Composite comparisons, n = 37, df = 35. For all other comparisons, n = 38, df = 36. Age is reported in years. CAARS scores are T-scores; DSM-IA is DSM-IV Inattentive Symptoms, DSM-HI is DSM-IV Hyperactive-Impulsive Symptoms; and DSM-Tot is DSM-IV ADHD Symptoms Total. DSM refers to symptom count on the ADHD symptoms checklist. AASRS refers to total score on the ADD/H Adolescent Self-Report Scale—Short Form. BIS refers to the total score on the Barratt Impulsiveness Scale. TLFB refers to variables reported on the Timeline follow-back procedure. The column labeled “d” reports Cohen’s d.
**
p < .01
***
p < .001.