An ecological assessment of community-based interventions for prevention and health promotion: approaches to measuring community coalitions.

Presented an ecological assessment of a community coalition to prevent alcohol, tobacco, and other drug abuse, and related risks. Ecological assessment is defined as occurring at multiple social levels and along a continuum of stages of coalition readiness. The assessment is aided by the triangulation, or combining of assessment methods and strategies. Measures used to assess the coalition's formation, implementation of community initiatives, and production of community impacts are described, along with the triangulation strategies used to enhance the assessment findings.