Table 2 Sex-specific proportions of alcohol consumption and marijuana use

 Ever consumed, %

93.1

73.6

< 0.001***

 Consumed alcohol during the past 12 months, %

81.0

57.3

< 0.001***

 Frequency of alcohol consumption during the past 12 months, %

0.004**

  Daily

1.7

0.6

  5–6 days per week

4.6

0.6

  1–4 days per week

21.3

6.7

  1–3 days per month

32.8

25.3

  Less than once a month

39.7

66.9

 Consumed alcohol during the past 30 days, %

66.7

36.0

< 0.001***

 Lifetime marijuana use, %

< 0.001***

  Non

23.6

47.2

  1 or 2 times

21.3

21.3

  3 or more times

55.1

31.5

 Marijuana use during the past 30 days, %

0.005**

  No

67.2

80.3

  Yes

32.8

19.7