Table 1

Characteristics of the study population and distributions of alcohol-related variables

	n^*(%)	Risky drinking (%)	Binge drinking (%)	Any trouble (%)	Any harm (%)	Drinks per typical drinking day (median, IQR)	Drinks per year (median, IQR)
Gender
Male	765 (43)	10	25	16	35	2 (2, 4)	234 (48, 728)
Female	1000 (57)	7	14	9	26	2 (1, 3)	108 (24, 364)
Age group, y
18–20	50 (3)	15	51	37	57	5 (2, 8)	168 (48, 780)
21–30	224 (13)	9	33	25	44	3 (2, 6)	120 (24, 364)
31–40	353 (20)	6	21	12	35	2 (2, 3)	156 (24, 364)
41–50	438 (25)	10	20	12	33	2 (1, 3)	156 (48, 365)
51–60	404 (23)	7	13	7	25	2 (1, 3)	156 (24, 546)
61–70	278 (16)	7	8	3	9	2 (1, 2)	182 (24, 730)
Rural
Yes	645 (37)	7	20	12	28	2 (1, 4)	182 (45, 546)
No	1079 (63)	9	18	12	31	2 (1, 3)	156 (24, 365)
NZDep06
1 (least deprived)	234 (13)	7	17	9	30	2 (1, 3)	182 (72, 546)
2	211 (12)	7	13	7	21	2 (1, 3)	156 (48, 546)
3	212 (12)	12	27	18	35	2 (1, 4)	156 (24, 364)
4	208 (12)	6	17	7	27	2 (1, 3)	182 (32, 728)
5	193 (11)	7	15	12	28	2 (1, 3)	156 (24, 364)
6	176 (10)	9	17	12	34	2 (2, 4)	156 (24, 364)
7	160 (9)	8	17	11	28	2 (2, 3)	156 (24, 364)
8	130 (7)	10	22	13	30	2 (2, 3)	156 (24, 364)
9	145 (8)	8	19	11	28	3 (2, 4)	78 (18, 364)
10 (most deprived)	101 (6)	8	28	30	46	3 (2, 6)	120 (6, 360)
Education
Primary	13 (1)	7	15	0	8	8 (2, 8)	182 (0, 240)
High school 1–3 y	306 (18)	10	20	16	27	2 (2, 4)	156 (24, 546)
High school >3 y	452 (26)	8	21	12	27	2 (2, 4)	156 (24, 365)
Polytechnic	372 (21)	9	19	14	33	2 (1, 4)	156 (27, 468)
University	520 (30)	6	14	7	29	2 (1, 3)	156 (24, 390)
Still a student	72 (4)	8	34	26	59	4 (2, 7)	156 (27, 390)