Skip to main content

Table 1 Prevalence and frequency of substance use behaviours in the past month

From: Exploring comorbid use of marijuana, tobacco, and alcohol among 14 to 15-year-olds: findings from a national survey on adolescent substance use

 

n

Weighted % (95% CI)

Prevalence of marijuana use in past month

  

  Smoked marijuana in past month

290

10.1 (8.7-11.5)

  Did not smoke marijuana in past month

2680

89.9 (88.5-91.3)

Frequency of marijuana use in past month

  

  Never at all

2426

81.0 (78.8-83.1)

  In the past but not in the past 30 days

254

8.9 (7.5-10.3)

  Once

62

2.2 (1.6-2.7)

  Two or three times

111

3.8 (3.1-4.6)

  Once a week

32

1.1 (0.7-1.6)

  Several times a week

37

1.3 (0.8-1.8)

  Every day

17

0.5 (0.3-0.8)

  Several times a day

31

1.1 (0.7-1.6)

Prevalence of tobacco use in past month

  

  Smoked cigarettes on at least one day in past month

335

11.4 (9.8-12.9)

  Did not smoke cigarettes on any days in past month

2658

88.6 (87.1-90.2)

Frequency of tobacco use in past month

  

  0 days

2658

88.6 (87.1-90.2)

  1 to 2 days

123

4.1 (3.3-4.8)

  3 to 5 days

46

1.6 (1.2-2.0)

  6 to 9 days

19

0.6 (0.3-0.9)

  10 to 19 days

43

1.5 (1.0-2.1)

  20 to 29 days

27

0.9 (0.6-1.3)

  All 30 days

77

2.6 (1.9-3.4)

Prevalence of binge drinking in past month

  

  Binge drinking in past month

472

16.8 (15.0-18.6)

  No binge drinking in past month

2421

83.2 (81.4-85.0)

Frequency of binge drinking in past month

  

  Never at all

2025

69.4 (67.1-71.7)

  In the past but not in the past 30 days

396

13.8 (12.3-15.2)

  Once

169

6.0 (5.0-7.0)

  Two or three times

184

6.6 (5.5-7.6)

  Once a week

62

2.2 (1.5-2.8)

  Several times a week

36

1.3 (0.9-1.8)

  Most days

21

0.8 (0.3-1.2)