Smoking remains prevalent among US youth despite decades of antismoking efforts. Effects from exposure to prevention programs at national level may provide informative and compelling data supporting better planning and strategy for tobacco control. A national representative sample of youth 12-17 years of age from the National Survey on Drug Use…

In implementing broad community initiatives, the ability to assess the delivery of services is a distinct challenge. Yet, understanding both the magnitude and cross-usage of services by target populations is often a precursor to effective program evaluation, program improvement and additional program planning. This research examines the extent to…