The drink and drug driving behaviours of young Queensland drivers and attitudes toward apprehension

Figures & data

Table 1. Self-reported past drink and drug driving, across GDL-system levels.

	Learners		P1		P2		Total
Offending	N	%	N	%	N	%	N	%
Drink driving
No	145	89.51	185	73.71	106	56.38	436	72.55
Yes	17	10.49	66	26.30	82	43.62	165	27.45
Drug driving
No	124	76.54	180	71.71	106	56.38	410	68.22
Yes	38	23.46	71	28.29	82	43.62	191	31.78
Neither	121	75%	144	57%	72	38%	337	56%
Drink driving only	3	2%	36	14%	34	18%	73	12%
Drug driving only	24	15%	41	16%	34	18%	99	17%
Drink and drug driving	14	9%	30	12%	48	26%	92	15%
Total	162	27%	251	42%	188	62%	601	100%

Table 2. ANOVA comparing learner, P1 and P2 drivers on future intentions to offend and certainty of apprehension for drink and drug driving.

	Learners		P1		P2		ANOVA
	M	SD	M	SD	M	SD	F/Welch	p
Drink driving certainty	2.30	.76	2.24	.67	2.06	.64	6.33	.002
Drug driving certainty	2.16	.88	2.02	.77	1.91	.75	4.04	.018
Future drink driving	1.48	.77	1.54	.85	1.86	1.07	7.87	<.001
Future drug driving	1.8	1.19	2.03	1.39	2.25	1.49	5	.007

Table 3. ANOVA comparing certainty of apprehension for drink and drug driving across offending levels.

	Drink driving certainty of apprehension		Drug driving certainty of apprehension
	M	SD	M	SD
Neither	2.27	.73	2.13	.81
Drink driving only	1.97	.6	1.97	.76
Drug driving only	2.22	.6	1.86	.8
Both drink and drug driving	2.08	.65	1.85	.73

Table 4. Linear regression predicting future drink and drug driving behaviors.

	Future Drink Driving						Future Drug Driving
	β	B	Lower	Upper	SE	sr^2	β	B	Lower	Upper	SE	sr^2
Gender (F/M)	0.03	0.05	−0.08	0.18	0.07	0.0008	0.052	0.144	−0.023	0.311	0.085	0.002601
License Type	0.02	0.03	−0.06	0.12	0.05	0.0004	0.001	0.002	−0.107	0.111	0.055	0.000001
Past drink/drug driving (N/Y)	0.44***	0.91	0.75	1.06	0.08	0.1739	0.661***	1.953	1.771	2.134	0.092	0.401956
Certainty drink/drug driving	−0.09*	−0.12	−0.21	−0.02	0.05	0.0074	−0.046	−0.08	−0.183	0.024	0.053	0.002025

Note: *p < .05, **p < .01, ***p < .001.