Table 3.

Odds ratio (OR) (95% confidence interval (CI) for drunkenness among boys and girls by adult drinking pattern and alcohol control policies, mutually adjusted (only significant associations are shown) (n = 37 countries).

Variable	Drunkenness
	Girls (n = 71 319)		Boys (n = 68 778)
	OR (CI)	P	OR (CI)	P
13-year-olds	1.00 (ref.)	<0.001	1.00 (ref.)	<0.001
15-year-olds	3.89 (3.73–4.00)		3.61 (3.46–3.76)
Adult drinking pattern
Abstainersa	0.79 (0.68–0.90)	0.001	–
Per capita, total
Low	1.00 (ref.)	<0.001	1.00 (ref.)	<0.001
Medium	2.00 (1.38–2.89)		2.04 (1.49–2.80)
High	2.44 (1.57–3.80)		3.15 (2.13–4.64)
Pattern of drinking score
Low risk	1.00 (ref.)	0.01	1.00 (ref.)	0.002
Medium	1.76 (1.17–2.66)		1.76 (1.03–3.02)
High risk	1.61 (1.18–2.18)		2.02 (1.33–3.05)
Policies
Minimum purchasing age
20–21 years	1.00 (ref.)	0.03	1.00 (ref.)	0.01
18 years	1.67 (1.05–2.63)		1.99 (1.31–3.02)
16 years	2.21 (1.16–4.18)		2.39 (1.33–4.29)
No age limit	1.45 (0.76–2.78)		1.92 (1.08–3.43)
Random
MORb/ICCb	1.72/9.0		1.69/8.6
MORc/ICCc	1.37/3.2		1.33/2.7
Goodness-of-fit
Dispersion parameter	0.99		1.00
Number of iterations	9		3

^aAssessed as a 10% increase in percentage of abstainers.

^bAge-adjusted.

^cFully adjusted.

MOR = median odds ratio; ICC = intraclass correlation.