Table 7

Perception of "harmfulness" of drugs: Percent of students in each group who answered "great risk."


Control
Drug Ed
Significance Level
How much do you think people risk harming themselves (physically or in other ways), if they...
Baseline N = 524
6-month follow-up N = 418
Baseline N = 434
6-month follow-up N = 290
p valuea

D5 smoke one or more packs of cigarettes per day?
66.0%
67.9%
65.2%
93.4%
<0.001
D6 try marijuana once or twice?
38.5%
41.6%
30.6%
53.4%
<0.001
D7 smoke marijuana regularly?
70.4%
72.7%
61.8%
87.2%
<0.001
D8 take one or two drinks nearly every day?
24.4%
33.5%
19.8%
55.2%
0.010
D9 have five or more drinks once or twice each weekend?
39.7%
44.7%
35.3%
71.4%
0.343

a Controlling for baseline differences by using an analysis of covariance with a Type III sums of squares

Lennox and Cecchini Substance Abuse Treatment, Prevention, and Policy 2008 3:8   doi:10.1186/1747-597X-3-8

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