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Nonmedical drug use among adolescent students: highlights from the 1999 Ontario Student Drug Use Survey
Table 1: Proportion of Ontario students in grades 7, 9, 11 and 13 who reported using nonmedical drugs in the year before being surveyed, 1991–1999
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| Drug |
Year; % of students (and 95% confidence interval)
|
1999 v. 1997 |
1999 v. 1993 |
1991
n = 3945 |
1993
n = 3571 |
1995
n = 3870 |
1997
n = 3990 |
1999
n = 2868 |
|
| Tobacco |
21.7 (20.3–23.1) |
23.8 (21.3–26.3) |
27.9 (26.2–29.6) |
27.6 (26.0–29.2) |
28.3 (24.8–32.1) |
|
* |
| Alcohol |
58.7 (55.6–61.8) |
56.5 (53.9–59.1) |
58.8 (56.7–60.9) |
59.6 (57.6–61.6) |
65.7 (62.5–68.8) |
‡ |
‡ |
| Cannabis |
11.7 (10.1–13.3) |
12.7 (11.4–14.0) |
22.7 (20.0–25.4) |
24.9 (23.3–26.5) |
29.2 (25.6–33.1) |
* |
‡ |
| Glue |
1.1 (0.8–1.4) |
1.6 (1.2–2.0) |
2.4 (2.0–2.8) |
1.5 (1.2–1.8) |
3.8 (3.0–4.9) |
† |
† |
| Other solvents |
1.6 (1.2–2.0) |
2.3 (1.7–2.9) |
2.9 (2.4–3.4) |
2.6 (2.0–3.2) |
7.3 (6.0–8.9) |
‡ |
‡ |
| Barbiturates |
2.2 (1.7–2.7) |
3.0 (2.5–3. 5) |
2.7 (2.1–3.3) |
2.5 (2.0–3.0) |
4.4 (3.1–6.0) |
† |
|
| Heroin |
1.0 (0.5–1.5) |
1.2 (0.7–1.7) |
2.0 (1.4–2.6) |
1.8 (1.5–2.1) |
1.7 (1.2–2.4) |
|
|
| Methamphetamine |
1.8 (1.1–2.5) |
2.0 (1.6–2.4) |
4.6 (3.4–5.8) |
3.6 (3.0–4.2) |
5.1 (3.4–7.6) |
|
|
| Stimulants |
4.0 (3.1–4.9) |
5.4 (4.4–6.4) |
6.3 (5.3–7.3) |
6.6 (5.8–7.4) |
7.6 (6.0–9.6) |
|
|
| Tranquillizers |
1.6 (1.2–2.0) |
1.1 (0.7–1.5) |
1.6 (1.1–2.1) |
1.7 (1.4–2.0) |
2.4 (1.4–4.1) |
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|
| LSD |
5.2 (4.2–6.2) |
6.9 (5.6–8.2) |
9.2 (7.1–11.3) |
7.6 (6.8–8.4) |
6.5 (4.8–8.9) |
|
|
| Other hallucinogens |
3.3 (2.7–3.9) |
3.1 (2.3–3.9) |
7.6 (5.7–9.5) |
10.1 (8.9–11.3) |
13.6 (10.7–17.1) |
* |
‡ |
| Cocaine |
1.6 (1.2–2.0) |
1.5 (1.1–1.9) |
2.4 (2.0–2.8) |
2.7 (2.4–3.0) |
4.1 (2.8–5.9) |
|
† |
| Crack cocaine |
1.0 (0.7–1.3) |
1.0 (0.7–1.3) |
1.7 (1.4–2.0) |
2.2 (1.6–2.8) |
2.3 (1.6–3.3) |
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| PCP |
0.5 (0.3–0.7) |
0.6 (0.3–0.9) |
1.7 (0.9–2.5) |
2.0 (1.4–2.6) |
3.2 (2.3–4.4) |
|
‡ |
| Crystal methamphetamine |
0.8 (0.2–1.4) |
1.2 (0.6–1.8) |
1.1 (0.6–1.6) |
–§ |
1.5 (0.6–3.6) |
|
|
| MDMA |
–§ |
0.6 (0.2–1.0) |
1.8 (1.0–2.6) |
3.1 (1.8–4.4) |
4.8 (3.0–7.5) |
|
‡ |
Note: LSD = lysergic acid diethylamide, PCP = phencyclidine, MDMA = methylenedioxymethamphetamine ("ecstasy").
*p < 0.05 for difference between confidence intervals.
†p < 0.01 for difference between confidence intervals.
‡p < 0.001 for difference between confidence intervals.
§Estimate suppressed (less than 0.5%). |
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