Table 2.

Alcohol consumption and risk-taking.

	Number of Alcoholic Drinks			Overall	Pairwise Comparisons
RT-18 Risk Taking Group	Low (0–5)	Moderate (6–12)	High (13–18)	p-Value	Low vs. Moderate	Moderate vs. High	Low vs. High
Usual AO occasion
Overall	6.1 (4.5)	7.4 (4.8)	9.8 (6.1)	<0.0001 *	<0.0001 *	<0.0001 *	<0.0001 *
The Netherlands	5.3 (3.8)	6.6 (3.9)	8.1 (4.5)	<0.0001 *	<0.0001 *	<0.0001 *	0.002 *
UK	8.3 (5.6)	9.2 (5.7)	12.3 (7.2)	<0.0001 *	0.215	0.001 *	<0.0001 *
Australia	4.8 (1.9)	5.8 (3.2)	7.6 (4.1)	0.053	-	-	-
Past month heaviest AO occasion
Overall	10.1 (6.3)	12.3 (6.9)	16.4 (8.7)	<0.0001 *	<0.0001 *	<0.0001 *	<0.0001 *
The Netherlands	9.5 (5.6)	11.9 (6.2)	15.6 (7.9)	<0.0001 *	<0.0001 *	<0.0001 *	<0.0001 *
UK	11.9 (7.5)	13.9 (8.0)	18.1 (9.3)	<0.0001 *	0.078	<0.0001 *	<0.0001 *
Australia	6.5 (3.7)	9.2 (4.5)	13.3 (8.0)	0.007 *	0.354	0.045 *	0.016 *
Usual AMED occasion
Overall	5.0 (3.4)	5.9 (3.9)	7.6 (4.8)	<0.0001 *	<0.0001 *	<0.0001 *	<0.0001 *
The Netherlands	4.8 (3.1)	6.0 (3.9)	7.7 (4.5)	<0.0001 *	0.001 *	0.001 *	<0.0001 *
UK	5.5 (4.2)	6.0 (4.3)	8.0 (5.2)	0.001 *	0.839	0.005 *	0.001 *
Australia	3.8 (2.0)	4.9 (2.9)	6.2 (4.0)	0.166	-	-	-
Past month heaviest AMED occasion
Overall	5.8 (5.1)	7.8 (6.2)	10.5 (8.6)	<0.0001 *	<0.0001 *	<0.0001 *	<0.0001 *
The Netherlands	5.2 (4.2)	7.4 (5.8)	9.4 (7.8)	<0.0001 *	<0.0001 *	0.127	<0.0001 *
UK	7.2 (6.9)	8.6 (7.1)	11.7 (8.9)	<0.0001 *	0.132	0.003 *	<0.0001 *
Australia	5.8 (3.4)	6.9 (4.7)	10.6 (9.8)	0.378	-	-	-

Mean and standard deviation (SD, between brackets) number of alcoholic drinks are shown. Post-hoc pairwise comparisons were conducted with Bonferroni’s correction. * = Differences are significant if p < 0.05. - = no post-hoc tests conducted as main effect was not significant. Abbreviations: AO = alcohol only; AMED = alcohol mixed with energy drink.