Table 1 Relationship between Demographic Variables and AUDIT Score Categories and Self-Reported Illicit Drug Use

Hazardous Drinking

N = 434

(22.4%)

Lower-risk Drinking

N = 382

(19.7%)

Non-drinkers

N = 1111

(57.4%)

Missing

N = 9

(0.5%)

p-value*

Yes

N = 324

(16.7%)

No

N = 1561

(80.6%)

Missing

N = 51

(2.6%)

p-value

Median (IQR) or Number

Median (IQR) or N (%)

Median (IQR) or N (%)

Median (IQR) or N (%)

Median (IQR) or N (%)

Median (IQR) or N (%)

Median (IQR) or N (%)

Median (IQR) or N (%)

Age, N = 1935

16 (14–17) (mean 15.6)

16 (15–17) (mean 16.1)

15 (14–17) (mean 15.5)

16 (14–17) (mean 15.5)

15 (14–17) (mean 14.9)

0.003

16 (15–17) (mean 16.1)

16 (14–17) (mean 15.5)

15 (14–16) (mean 15.4)

< 0.001

Gender

0.003

 Male

904 (46.7%)

256 (28.3%)

180 (19.9%)

464 (51.3%)

4 (0.4%)

212 (23.5%)

671 (74.2%)

21 (2.3%)

< 0.001

 Female

1029 (53.2%)

175 (17.0%)

202 (19.6%)

647 (62.9%)

5 (0.5%)

110 (10.7%)

889 (86.4%)

30 (2.9%)

 Missing

3 (0%)

3 (100%)

0 (0%)

0 (0%)

0 (0%)

2 (0.6%)

1 (0.1%)

0 (0%)

Form in school (range 1–5)

3 (2–4) (mean 2.9)

3 (2–4) (mean 3.2)

3 (2–4) (mean 2.8)

3 (2–4) (mean 2.8)

2 (1–2) (mean 1.8)

0.005

4 (2–4) (mean 3.3)

3 (2–4) (mean 2.9)

2 (2–3) (mean 2.5)

< 0.001

 Form 1

402 (20.8%)

63 (15.7%)

78 (19.4%)

257 (63.9%)

4 (1.0%)

43 (10.7%)

350 (87.1%)

9 (2.2%)

 Form 2

371 (19.2%)

68 (18.3%)

82 (22.1%)

218 (58.8%)

3 (0.8%)

44 (11.9%)

304 (81.9%)

23 (6.2%)

 Form 3

360 (18.6%)

87 (24.2%)

87 (24.2%)

185 (51.4%)

1 (0.2%)

64 (17.8%).

289 (80.3%)

7 (1.9%)

 Form 4

566 (29.2%)

131 (23.1%)

96 (17.0%)

338 (59.7%)

1 (0.2%)

107 (18.9%)

448 (79.2%)

11 (1.9%)

 Form 5

237 (12.2%)

85 (35.9%)

39 (16.4%)

113 (47.7%)

0 (0%)

66 (27.9%)

170 (71.7%)

1 (0.4%)

 Urban

1173 (60.6%)

290 (24.7%)

233 (19.9%)

641 (54.6%)

9 (0.8%)

0.028

212 (18.1%)

928 (79.1%)

33 (2.8%)

0.24

 Peri-urban

763 (39.4%)

144 (18.9%)

149 (19.5%)

470 (61.6%)

0 (0%)

112 (14.7%)

633 (83.0%)

18 (2.4%)