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Table 7 Perception of "harmfulness" of drugs: Percent of students in each group who answered "great risk."

From: The NARCONON™ drug education curriculum for high school students: A non-randomized, controlled prevention trial

 

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

  1. aControlling for baseline differences by using an analysis of covariance with a Type III sums of squares