Table 1.
Descriptive Statistics for Total Sample, Descriptives for Condition Subgroups, and Conditional Comparisons
| Variable | Total Sample (N = 25) | Alcohol/Neutral (n = 12) | Alcohol/Trauma (n = 13) | Comparative Analyses |
|
|---|---|---|---|---|---|
| Test | p | ||||
| Age | 24.08 ± 3.23 | 23.58 ± 2.50 | 24.54 ± 3.82 | t = 0.73 | .471 |
| Range | 21–32 | 21–27 | 21–32 | ||
| Biological Sex (Female) | 9 (36.0%) | 4 (33.3%) | 5 (38.5%) | χ2 = 1.89 | .170 |
| Racea | χ2 = 0.53 | .467 | |||
| African-American | 3 (12.0%) | 3 (25.0%) | - | ||
| White | 15 (60.0%) | 7 (58.3%) | 8 (61.5%) | ||
| Hispanic/Latinx | 5 (20.0%) | 2 (16.7%) | 3 (23.1%) | ||
| Other | 2 (8.0%) | - | 2 (15.4%) | ||
| Alcohol Tolerance | 6.88 ± 4.46 | 5.50 ± 3.26 | 8.15 ± 5.13 | t = 1.53 | .140 |
| Index Trauma Typeb | χ2 = 1.47 | .225 | |||
| Transportation | 1 (4.0%) | - | 1 (7.7%) | ||
| Serious Accident | 1 (4.0%) | - | 1 (7.7%) | ||
| Physical Assault | 6 (24.0%) | 2 (16.7%) | 4 (30.8%) | ||
| Assault with Weapon | 1 (4.0%) | 1 (8.3%) | - | ||
| Sexual Assault | 7 (28.0%) | 4 (33.3%) | 3 (23.1%) | ||
| Other Sexual Experience | 3 (12.0%) | 2 (16.7%) | 1 (7.7%) | ||
| Combat Exposure | 1 (4.0%) | 1 (8.3%) | - | ||
| Life-Threatening Injury | 1 (4.0%) | 1 (8.3%) | - | ||
| Sudden Violent Death | 1 (4.0%) | - | 1 (7.7%) | ||
| Sudden Accidental Death | 3 (12.0%) | 1 (8.3%) | 2 (15.4%) | ||
| PTSD Symptom Severity | 24.32 ± 18.52 | 22.92 ± 16.05 | 25.62 ± 21.12 | t = 0.36 | .724 |
| Range | 0–68 | 4–62 | 0–68 | ||
| Impulsivityb | |||||
| Negative Urgency | 10.43 ± 2.93 | 11.24 ± 2.24 | 10.00 ± 3.38 | t = 0.08 | .452 |
| Lack of Perseverance | 11.85 ± 1.23 | 11.13 ± 1.36 | 12.33 ± 0.89 | t = 2.42 | .026 |
| Lack of Premeditation | 11.00 ± 1.65 | 11.00 ± 1.87 | 11.00 ± 1.54 | - | - |
| Sensation Seeking | 8.30 ± 2.94 | 8.44 ± 2.96 | 8.18 ± 3.06 | t = 0.19 | .849 |
| Positive Urgency | 11.75 ± 3.45 | 11.11 ± 3.14 | 12.27 ± 3.74 | t = 0.74 | .468 |
| Perception of Dangerousness of Driving After Alcohol | 86.96 ± 20.88 | 90.17 ± 14.62 | 84.00 ±25.62 | t = 0.73 | .472 |
Note: Data presented as M ± SD and n (%).
Due to small sample size, participants identifying as Asian (n = 1; 4.0%), Native American (n = 1; 4.0%) were combined in the Other category for analysis.
Due to small sample size, data were dichotomized by non-interpersonal (i.e., transportation, serious accident, life-threatening injury, sudden violent death, sudden accidental death) vs. interpersonal (i.e., physical assault, assault with a weapon, sexual assault, other sexual experience, combat exposure) index trauma for analysis
Data not available for four participants on Negative Urgency (16.0%) subscale, five on Lack of Perseverance (20.0%), five on Lack of Premeditation (20.0%), five on Sensation Seeking (20.0%), and five on Positive Urgency (20.0%).