Program Description
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Program Description :


Introduction
Program Recognition
Program Implementation
Program Facilitator Training
Theoretical Foundation
Evaluation
Conducting Local Program Evaluation





Evaluation Research

Four studies of Project EX have been conducted or are being conducted. [For a copy of the research article summarizing these studies, click here.] In the first evaluation study (Project EX-1), the clinic program was tested in a 3-group experimental design:

  • (1) clinic only,
  • (2) clinic plus a school-as-community component, and
  • (3) standard care control.

Eighteen schools were assigned to the three conditions using a randomized block design. A total of 335 smokers participated in the study, making this the largest controlled teen smoking cessation field trial conducted to date. Results at 3-month follow-up (five months after the quit day) showed that 17% of the smokers enrolled in the clinics had quit smoking for at least the last 30 days, compared to only 8% of the control condition smokers over than same time period. [For a copy of the research article describing the EX-1 results, click here.]

The second evaluation (Project EX-2) was a replication pilot study that tested generalizability of the program in Wuhan, China. The study indicated similar effects among 46 youth, utilizing a multiple-baseline, single subject design. Adjusting for biochemical validation, a 14% intent-to-treat quit rate was achieved at 4-month follow-up. [For a copy of the research article describing the EX-2 results, click here.]

The third evaluation (Project EX-3) was a randomized trial that used the addition of nicotine gum as a pharmacological adjunct. This study was conducted in both regular and continuation (alternative) high schools. Results at 2-month follow-up showed that the intent-to-treat 7-day quit rates were 11% in the Nicorette condition and 13% in the CigArrest condition. At 6-month follow-up, the intent-to-treat 7-day quit rates were 16% in the Nicorette condition and 15% in the CigArrest condition.

At present, the fourth evaluation (Project EX-4) is being completed. It adapts the program from a clinic setting to a classroom setting (i.e., universal program).

Currently, only the clinic-based version of Project EX is being disseminated.