Table 1 Socio-demographic characteristics overall and by use of prescription stimulants, survey in French-speaking universities, Belgium, 2018

Age (years)

n

Mean (SD)

Median (Q1-Q3)

729

22.4 (2.9)

22 (20-24)

10 363

21.1 (2.8)

21 (19-23)

11,092

21.2 (2.8)

21 (19-23)

Gender

n

Female

Male

Other

732

360 (49.2, 45.6-52.8)

363 (49.6, 46.0-52.2)

9 (1.2, 0.6-2.3)

10 401

6 932 (66.6, 65.7-67.6)

3 420 (32.9, 32.0-33.8)

49 (0.5, 0.3-0.6)

11 133

7 292 (65.5, 64.6-66.3))

3 783 (34.0, 33.1-34.9)

58 (0.5, 0.4-0.7)

School year

n

Bachelor (1st year)

Bachelor (other)

Master

715

160 (22.4, 19.4-25.6)

237 (33.1, 29.7-36.7)

318 (44.5, 40.8-48.2)

10 199

3 319 (32.5, 31.6-33.5)

3 139 (30.8, 29.9-31.7)

3 741 (36.7, 35.7-37.6)

10 914

3 479 (31.9, 31.0-32.8)

3 376 (30.9, 30.1-31.8)

4 059 (37.2, 36.3-38.1)

Working status

No job

Vacation job

Job < 20 h/week

Job ≥ 20 h/week

716

286 (39.9, 36.3-43.6)

144 (20.1, 17.2-23.2)

191 (26.7, 23.5-30.1)

95 (13.3, 10.9-16.0)

10 161

4 630 (45.6, 44.6-46.5)

2 718 (26.7, 25.9-27.6)

2 152 (21.2, 20.4-22.0)

661 (6.5, 6.0-7.0)

10 877

4 916 (45.2, 44.3-46.1)

2 862 (26.3, 25.5-27.2)

2 343 (21.5, 20.8-22.3)

756 (7.0, 6.5-7.4)

Housing status

n

With parents/family

Flat sharing

Alone

Other

713

331 (46.4, 42.8-50.1)

214 (30.0, 26.7-33.6)

150 (21.0, 18.1-24.2)

18 (2.5, 1.5-4.0)

10 132

5 529 (51.6, 50.6-52.6)

3 007 (29.7, 28.8-60.6)

1 619 (16.0, 15.3-16.7)

277 (2.7, 2.4-3.1)

10 845

5 560 (51.3, 50.3-52.2)

3 221 (29.7, 28.8-30.6)

1 769 (16.3, 15.6-17.0)

295 (2.7, 2.4-3.0)