Table 2.
Demographic variables and descriptive statistics for the placebo and alcohol groups.
| Total | Placebo | Alcohol | Difference | |
|---|---|---|---|---|
| Sample size | 49 | 22 | 27 | N/A |
| Mean Age in Years (SD) | 22.4 (2.5) | 22.1 (1.4) | 22.6 (3.1) | t(47) = 0.69, p = 0.50 |
| Gender: Female/Male | 23/26 | 11/11 | 12/15 | χ2 = 0.15, p = 0.8 |
| Mean BALa (SD) | N/A | 0.00 (0.00) | 0.09 (0.02) | t(47) = 27.20, p < 0.001 |
| Mean Subjective Estimate of Number of Drinks Consumed During the Study (SD) | N/A | 2.07 (1.09)b | 4.56 (1.25)c | t(47) = 7.32, p < 0.001 |
| Mean Motion, Frame-to-Frame Displacement (SD) | 0.13 (0.03) | 0.12 (0.03) | 0.13 (0.03) | t(47) = 1.01, p = 0.32 |
aPre-MRI and post-MRI BAL were strongly correlated, r(47) = 0.96, p < 0.001. bWithin-group difference from zero, t(21) = 8.87, p < 0.001. cWithin-group difference from zero, t(26) = 18.93, p < 0.001.