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AJPH First Look, published online ahead of print Feb 28, 2007
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Community Coalitions as a System: Effects of Network Change on Adoption of Evidence-Based Substance Abuse Prevention

Thomas W. Valente, PhD, Chich Ping Chou, PhD and Mary Ann Pentz, PhD

Thomas W. Valente, Chih Ping Chou, and Mary Ann Pentz are with the Institute for Prevention Research, Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Alhambra.


Figure 1
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  		FIGURE 1—— Change in program adoption outcomes by change in network density with Ordinary Least Squares Regression Estimate.

Note. Coalitions are indicated by Control (0) or Intervention (1).

 

Figure 2
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  		FIGURE 2—— Path model of the effects of treatment, baseline density, and wave 2 density on community-level adoption of prevention programs.

Note. STEP = Steps Toward Effective Prevention. The model indicates that the Steps Toward Effective Prevention intervention decreased network density. Decreased network density was associated with increased program adoption.

 




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