Table 4 Results from the univariate logistic regression to identify personality predictors (age 18) of persistent driving after substance use for males*
Persistent driving after drinking too muchPersistent driving after using marijuana
Odds ratio (95% CI)Odds ratio (95% CI)
(Lower to upper)p(Lower to upper)p
Traditionalism
    Medium2.74 (0.60 to 12.45)0.20.66 (0.36 to 1.19)0.2
    High1.21 (0.20 to 7.41)0.80.24 (0.10 to 0.57)0.001
Harm Avoidance
    Medium1.03 (0.33 to 3.23)0.90.72 (0.41 to 1.29)0.3
    High0.95 (0.25 to 3.62)0.90.36 (0.16 to 0.80)0.01
Control
    Medium0.91 (0.31 to 2.68)0.90.52 (0.29 to 0.95)0.03
    High0.15 (0.02 to 1.30)0.080.28 (0.12 to 0.62)0.002
Aggression
    Medium3.09 (0.65 to 14.79)0.24.93 (1.86 to 13.12)0.001
    High3.90 (0.80 to 19.14)0.098.80 (3.31 to 23.41)<0.001
Alienation
    Medium1.16 (0.24 to 5.71)0.91.11 (0.49 to 2.57)0.8
    High2.83 (0.59 to 13.69)0.13.14 (1.36 to 7.25)0.007
Stress Reaction
    Medium1.70 (0.36 to 8.02)0.51.61 (0.77 to 3.35)0.2
    High2.93 (0.58 to 14.92)0.21.48 (0.63 to 3.48)0.4
Well-Being
    Medium0.72 (0.22 to 2.41)0.60.84 (0.43 to 1.64)0.6
    High1.22 (0.36 to 4.11)0.71.62 (0.82 to 3.18)0.2
Social Potency
    Medium5.33 (1.16 to 24.44)0.031.27 (0.70 to 2.32)0.4
    High3.01 (0.54 to 16.72)0.21.00 (0.49 to 2.03)1.0
Achievement
    Medium3.95 (0.50 to 31.37)0.20.95 (0.46 to 1.96)0.9
    High3.06 (0.36 to 25.84)0.31.00 (0.47 to 2.12)1.0
Social Closeness
    Medium0.64 (0.21 to 1.95)0.41.42 (0.75 to 2.71)0.3
    High0.39 (0.11 to 1.36)0.11.02 (0.51 to 2.01)1.0
  • * For all potential predictors, the “low” group is the reference group.