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Table 3 Drug use at baseline: 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 = 523

Drug Ed Group N = 435

Significance Level

Drug Use Variable

Mean

Mean

t

df

p valuea

B1 Cigarettes (frequency)

1.38

1.45

-0.962

850

0.336

B2 Smokeless tobacco

1.38

1.34

0.634

951

0.526

B3 Cigarettes (amt. smoked)

1.51

1.62

-1.047

956

0.295

B4 Alcohol

1.64

1.51

1.611

955

0.107

B5 Being drunk

1.28

1.31

-0.408

866

0.684

B6 Marijuana

1.24

1.22

0.326

944

0.744

B7 Marijuana (amt. smoked)

1.19

1.21

-0.332

894

0.740

B8 Sniffed glue

1.11

1.11

0.132

876

0.895

B9 LSD

1.03

1.05

-0.672

802

0.502

B10 Amphetamines

1.07

1.13

-1.404

731

0.161

B11 Crack

1.05

1.07

-0.836

804

0.403

B12 Cocaine

1.06

1.07

-0.247

922

0.805

B13 Tranquiller

1.08

1.10

-0.513

790

0.608

B14 Barbiturates

1.08

1.10

-0.699

732

0.485

B15 Crystal Meth

1.04

1.07

-0.829

769

0.407

B16 Amphetamine w/o Rx

1.09

1.08

0.022

907

0.982

B17 Heroin

1.02

1.05

-1.078

654

0.281

B18 Other Narcotics

1.07

1.08

-0.257

866

0.798

B19 Ecstasy

1.07

1.06

0.463

904

0.644

B20 Roofies

1.02

1.06

-1.087

588

0.277

B21 GHB

1.02

1.04

-1.126

532

0.261

B22 Super K

1.02

1.05

-1.013

626

0.311

  1. aControlling for baseline differences by using an analysis of covariance with a Type III sums of squares, The t-test df is corrected for unequal variances.
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Substance Abuse Treatment, Prevention, and Policy

ISSN: 1747-597X