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National Drug Control Strategy
Update 2003

February 2003

Table 10. Trends in Harmfulness of Drugs as Perceived by 12th Graders, Monitoring the Future Study, 19912002

Drug Behavior
Percentage saying “great risk“1
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2001-2002 Change
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 16.1 +0.8
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 23.2 -0.3
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 53.0 -4.4s
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 50.8 +1.4
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 65.6 +0.2
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 49.5 +0.5
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 64.4 +1.2
Approximate N 2,549 2,684 2,759 2,591 2,603 2,449 2,579 2,500 2,300 2,130 2,173 2,198  
Note: s=.05; any inconsistency between the 2000–2001 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.
Source: Institute for Social Research, University of Michigan, Monitoring the Future study (December 2002).

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Last Updated: May 7, 2003