Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Randomized Controlled Trial
. 2007 Feb;32(2):342-50.
doi: 10.1016/j.addbeh.2006.05.005. Epub 2006 Jul 3.

Short-term effects of Project EX-4: a classroom-based smoking prevention and cessation intervention program

Ping Sun  1 , James Miyano, Louise Ann Rohrbach, Clyde W Dent, Steve Sussman
Affiliations
Randomized Controlled Trial

Short-term effects of Project EX-4: a classroom-based smoking prevention and cessation intervention program

Ping Sun et al. Addict Behav. 2007 Feb.

Abstract

Objective: Researchers continue to try to develop effective teen tobacco use prevention and cessation programs. Three previous school clinic-based studies established the efficacy of Project EX for teen smoking cessation. This fourth study adapts Project EX to the classroom context. This paper reports the findings based on pretest and posttest surveys conducted immediately prior and post-intervention.

Methods: An eight-session classroom-based curriculum was developed and tested with a randomized controlled trial that involved a total of 1097 students in six program and six control continuation high schools. Program-specific knowledge and smoking measures were assessed at both the pretest and posttest surveys, and were used to evaluate the program's effect on the immediate outcomes. The immediate outcomes effects were analyzed with multi-level random coefficients models.

Results: Program students provided favorable process ratings of the overall program and each session. Compared with the students in the control condition, students in the program condition showed a greater change in correct knowledge responses from pretest to posttest (beta=+5.5%, p=0.0003). Students in the program condition also experienced a greater reduction in weekly smoking (beta=-6.9%, p=0.038), and intention for smoking in the next 12 months (beta=-0.21 in 5-level scale, p=0.023).

Conclusions: EX-4 immediate outcome results revealed favorable student responses to the program, increases in knowledge, and decreases in smoking relative to a standard care control condition.

PubMed Disclaimer

References

    1. Centers for Disease Control and Prevention Incidence of initiation of cigarette smoking – United States, 1965–1996. Morbidity and Mortality and Clinical Psychology. 1998;46:1217–1220.
    1. Dent CW, Sussman S, Hennesy M, Galaif ER, Stacy AW, Moss M, et al. Implementation and process evaluation of a school-based drug abuse prevention program: Project Towards No Drug Abuse. Journal of Drug Education. 1998;28(4):361–375. - PubMed
    1. Fiore MC, Bailey WC, Cohen SJ, Dorfman SF, Goldstein MG, Gritz ER, et al. Treating tobacco use and dependence. Clinical practice guideline. U.S. Department of Health and Human Services Public Health Service; Rockville, MD: 2000.
    1. Flay BR. Youth tobacco use: Risk patterns, and control. In: Slade JO, editor. Nicotine addiction: Principles and management. Oxford University Press; New York: 1993. pp. 653–661.
    1. Graham JW, Flay BR, Johnson CA, Hansen WB, Grossman L, Sobel JL. Reliability of self-report measures of drug use in prevention research: Evaluation of the Project SMART questionnaire via the test–retest reliability matrix. Journal of Drug Education. 1984;14(2):175–193. - PubMed

Publication types