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 much		Persistent driving after using marijuana
	Odds ratio (95% CI)		Odds ratio (95% CI)
	(Lower to upper)	p	(Lower to upper)	p
Traditionalism
Medium	2.74 (0.60 to 12.45)	0.2	0.66 (0.36 to 1.19)	0.2
High	1.21 (0.20 to 7.41)	0.8	0.24 (0.10 to 0.57)	0.001
Harm Avoidance
Medium	1.03 (0.33 to 3.23)	0.9	0.72 (0.41 to 1.29)	0.3
High	0.95 (0.25 to 3.62)	0.9	0.36 (0.16 to 0.80)	0.01
Control
Medium	0.91 (0.31 to 2.68)	0.9	0.52 (0.29 to 0.95)	0.03
High	0.15 (0.02 to 1.30)	0.08	0.28 (0.12 to 0.62)	0.002
Aggression
Medium	3.09 (0.65 to 14.79)	0.2	4.93 (1.86 to 13.12)	0.001
High	3.90 (0.80 to 19.14)	0.09	8.80 (3.31 to 23.41)	<0.001
Alienation
Medium	1.16 (0.24 to 5.71)	0.9	1.11 (0.49 to 2.57)	0.8
High	2.83 (0.59 to 13.69)	0.1	3.14 (1.36 to 7.25)	0.007
Stress Reaction
Medium	1.70 (0.36 to 8.02)	0.5	1.61 (0.77 to 3.35)	0.2
High	2.93 (0.58 to 14.92)	0.2	1.48 (0.63 to 3.48)	0.4
Well‐Being
Medium	0.72 (0.22 to 2.41)	0.6	0.84 (0.43 to 1.64)	0.6
High	1.22 (0.36 to 4.11)	0.7	1.62 (0.82 to 3.18)	0.2
Social Potency
Medium	5.33 (1.16 to 24.44)	0.03	1.27 (0.70 to 2.32)	0.4
High	3.01 (0.54 to 16.72)	0.2	1.00 (0.49 to 2.03)	1.0
Achievement
Medium	3.95 (0.50 to 31.37)	0.2	0.95 (0.46 to 1.96)	0.9
High	3.06 (0.36 to 25.84)	0.3	1.00 (0.47 to 2.12)	1.0
Social Closeness
Medium	0.64 (0.21 to 1.95)	0.4	1.42 (0.75 to 2.71)	0.3
High	0.39 (0.11 to 1.36)	0.1	1.02 (0.51 to 2.01)	1.0

* For all potential predictors, the “low” group is the reference group.