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Table 4 Drug use at six month follow-up: Comparison of means between treatment and control groups.

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

  Control Group N = 420 Drug Ed Group N = 389 Direction of difference Significance Level df = 11
Drug Use Variable Mean Mean   F p valuea
B1 Cigarettes (frequency) 1.34 1.26 Positive 3.35 <0.001
B2 Smokeless tobacco 1.34 1.26 Positive 3.39 <0.001
B3 Cigarettes (amt. smoked) 1.49 1.35 Positive 3.89 <0.001
B4 Alcohol 1.57 1.41 Positive 1.87 0.040
B5 Being drunk 1.43 1.24 Positive 1.69 0.073
B6 Marijuana 1.30 1.18 Positive 2.28 0.010
B7 Marijuana (amt. smoked) 1.18 1.13 Positive 2.12 0.017
B8 Sniffed glue 1.13 1.06 Positive 0.86 0.584
B9 LSD 1.05 1.04 Positive 1.12 0.339
B10 Amphetamines 1.11 1.07 Positive 2.35 0.008
B11 Crack 1.06 1.03 Positive 0.681 0.758
B12 Cocaine 1.08 1.03 Positive 0.97 0.471
B13 Tranquiller 1.09 1.06 Positive 0.73 0.710
B14 Barbiturates 1.10 1.05 Positive 1.07 0.380
B15 Crystal Meth 1.07 1.04 Positive 1.12 0.273
B16 Amphetamine w/o Rx 1.09 1.03 Positive 1.59 0.098
B17 Heroin 1.04 1.03 Positive 0.327 0.980
B18 Other Narcotics 1.06 1.04 Positive 1.13 0.335
B19 Ecstasy 1.05 1.03 Positive .97 0.475
B20 Roofies 1.03 1.03 Zero 1.19 0.287
B21 GHB 1.02 1.04 Negative 2.39 0.006
B22 Super K 1.02 1.02 Zero 1.96 0.030
  1. aControlling for baseline differences by using an analysis of covariance with a Type III sums of squares