DRUG USE

Table 6. Trends in Harmfulness of Drugs as Perceived by 8th, 10th, and 12th Graders, Monitoring the Future Study, 19912001

Drug Behavior

Percentage saying "great risk"1

1991

1992

1993

1994

1995

1996

1997

1998


1999


2000


2001

20002001
Change

8th grade

How much do you think people risk harming themselves (physically or in other ways), if they . . .

Try marijuana once or twice

40.4

39.1

36.2

31.6

28.9

27.9

25.3

28.1

28.0

29.0

27.7

-1.3

Smoke marijuana occasionally

57.9

56.3

53.8

48.6

45.9

44.3

43.1

45.0

45.7

47.4

46.3

-1.2

Smoke marijuana regularly

83.8

82.0

79.6

74.3

73.0

70.9

72.7

73.0

73.9

74.8

72.2

-2.5s

Try crack once or twice2

62.8

61.2

57.2

54.4

50.8

51.0

49.9

49.3

48.7

48.5

48.6

+0.2

Take crack occasionally2

82.2

79.6

76.8

74.4

72.1

71.6

71.2

70.6

70.6

70.1

70.0

-0.1

Try cocaine powder once or twice2

55.5

54.1

50.7

48.4

44.9

45.2

45.0

44.0

43.3

43.3

43.9

+0.6

Take cocaine powder occasionally2

77.0

74.3

71.8

69.1

66.4

65.7

65.8

65.2

65.4

65.5

65.8

+0.4

Approximate N

17,437

18,662

18,366

17,394

17,501

17,926

18,765

18,100

16,700

17,300

16,200


10th grade

How much do you think people risk harming themselves (physically or in other ways), if they . . .

Try marijuana once or twice

30.0

31.9

29.7

24.4

21.5

20.0

18.8

19.6

19.2

18.5

17.9

-0.5

Smoke marijuana occasionally

48.6

48.9

46.1

38.9

35.4

32.8

31.9

32.5

33.5

32.4

31.2

-1.2

Smoke marijuana regularly

82.1

81.1

78.5

71.3

67.9

65.9

65.9

65.8

65.9

64.7

62.8

-1.9

Try crack once or twice

70.4

69.6

66.6

64.7

60.9

60.9

59.2

58.0

57.8

56.1

57.1

+1.0

Take crack occasionally

87.4

86.4

84.4

83.1

81.2

80.3

78.7

77.5

79.1

76.9

77.3

+0.4

Try cocaine powder once or twice

59.1

59.2

57.5

56.4

53.5

53.6

52.2

50.9

51.6

48.8

50.6

+1.7

Take cocaine powder occasionally

82.2

80.1

79.1

77.8

75.6

75.0

73.9

71.8

73.6

70.9

72.3

+1.5

Approximate N

14,719

14,808

15,298

15,880

17,006

15,670

15,640

15,000

13,600

14,600

14,000


12th grade

How much do you think people risk harming themselves (physically or in other ways), if they . . .

Try marijuana once or twice

27.1

24.5

21.9

19.5

16.3

15.6

14.9

16.7

15.7

13.7

15.3

+1.6

Smoke marijuana occasionally

40.6

39.6

35.6

30.1

25.6

25.9

24.7

24.4

23.9

23.4

23.5

+0.1

Smoke marijuana regularly

78.6

76.5

72.5

65.0

60.8

59.9

58.1

58.5

57.4

58.3

57.4

-0.9

Try crack once or twice

60.6

62.4

57.6

58.4

54.6

56.0

54.0

52.2

48.2

48.4

49.4

+1.0

Take crack occasionally

76.5

76.3

73.9

73.8

72.8

71.4

70.3

68.7

67.3

65.8

65.4

-0.4

Try cocaine powder once or twice

53.6

57.1

53.2

55.4

52.0

53.2

51.4

48.5

46.1

47.0

49.0

+2.0

Take cocaine powder occasionally

69.8

70.8

68.6

70.6

69.1

68.8

67.7

65.4

64.2

64.7

63.2

-1.5

Approximate N

2,549

2,684

2,759

2,591

2,603

2,449

2,579

2,500

2,300

2,130

2,173


Note: s=.05; Any inconsistency between the 20002001 change estimate and the respective prevalence estimates is due to rounding.

1Answer alternatives were: (1) no risk, (2) slight risk, (3) moderate risk, (4) great risk, and (5) can't say, drug unfamiliar.
28th and 10th grade: Beginning in 1997, data based on two-thirds of N indicated due to changes in questionnaire forms.

Source: Institute for Social Research, University of Michigan, Monitoring the Future study (December 2001).




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