Table 1.
Characteristics of the study groups: mean±SD / frequency count
| Control (n=27) | AUD (n=23) | p-value* | |
|---|---|---|---|
| N (men/women) | 15/12 | 17/6 | n.s. |
| Age (years) | 50.6±10.1 | 52.8±7.9 | n.s. |
| Handedness (Right/Left) | 26/1 | 18/5 | n.s. |
| Ethnicity1 | 15/5/7 | 13/7/3 | n.s. |
| Body Mass Index (BMI) | 24.8±3.4 | 28.8±5.5 | 0.005 |
| Education (years) | 16.2±2.4 | 12.5±1.5 | <.0001 |
| Socioeconomic Status (SES)2 | 21.9±17.7 | 45.5±12.6 | <.0001 |
| WTAR IQ (predicted full scale) | 104.7±9.9^ | 94.6±10.0+ | 0.002 |
| Beck Depression Index (BDI) scores | 3.8±4.1^ | 12.9±9.6 | 0.0003 |
| Smoker (never/past/current) | 24 / 1 / 2 | 5 / 4 / 14 | <.0001 |
| Global Assessment of Functioning (GAF) | 87.6±5.3^ | 65.2±9.3 | <.0001 |
| Hepatitis C Virus (HCV, positive/negative) | 2/25 | 4/19 | n.s. |
| Lifetime alcohol consumption (kg) | 54.0±80.7# | 1842.5±1662.4 | <.0001 |
| AUD onset age | - | 21.7±6.7 | n.a. |
| days since last drink | - | 111.7±93.0 | n.a. |
| CIWA3 scale | - | 6.2±16.7 | n.a. |
*
t-tests used on continuous variables (e.g., age);
χ2 used on nominal variables (e.g., handedness);
1
self-defined: Caucasian / African American / Other (Asian, Native American, Islander);
2
lower score = higher status;
3
Clinical Institute Withdrawal Assessment of Alcohol;
#
n=19,
^
n=18,
+
n=21