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Randomized Controlled Trial
. 2010 Sep-Oct;51(3-4):313-9.
doi: 10.1016/j.ypmed.2010.07.016. Epub 2010 Jul 23.

One-year follow-up evaluation of the Project Towards No Drug Abuse (TND) dissemination trial

Louise A Rohrbach  1 , Ping Sun, Steve Sussman
Affiliations
Randomized Controlled Trial

One-year follow-up evaluation of the Project Towards No Drug Abuse (TND) dissemination trial

Louise A Rohrbach et al. Prev Med. 2010 Sep-Oct.

Abstract

Objective: The aims of this trial, conducted 2004-2008, were to examine (1) the effectiveness of Project Towards No Drug Abuse (TND) at the one-year follow-up when implemented on a large scale; and (2) the relative effectiveness of two training approaches for program implementers.

Method: A total of 65 high schools from 14 school districts across the United States were randomized to one of three conditions: regular workshop training, comprehensive implementation support, or standard care control. Physical education and health teachers delivered the program to students (n=2538). Program effectiveness was assessed with dichotomous measures of 30-day substance use at baseline and one-year follow-up.

Results: When the program conditions were considered in aggregate and compared to controls, the program showed a marginally significant effect in lowering marijuana use from baseline to the one-year follow-up. Significant program effects on hard drug use were achieved for baseline non-users only. There were no differences in the effects of the two program conditions.

Conclusion: Positive outcomes may be achieved by trained teachers when they implement Project TND in real-world high school environments; however, program effects are likely to be weaker than those achieved in efficacy trials. Training workshops may be adequate to build capacity for successful program implementation.

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Figure 1
Flow of Study Participants
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