The intervention can be a one-time event. For example, you might want to study the effect of a short-term advertising campaign on the sales of a product. In this case, the input variable has the value ...

Please provide your email address to receive an email when new articles are posted on . WASHINGTON — Using a simulation model, researchers estimated that regular testing and improved engagement in ...

Perceiving that the benefits of physical activity outweigh its barriers or costs. All of these appear to be central determining factors influencing activity levels across the life span. Some ...

Policy makers seeking to reduce childhood obesity must prioritize investment in treatment and primary prevention. We estimated the cost-effectiveness of seven interventions high on the obesity policy ...

Theories should guide research concerning factors that influence adult physical activity. Social support, self- efficacy, and beliefs about the outcome of physical activity have been closely related ...

In many developing countries, a significant fraction of the tuberculosis burden comes potentially from the tuberculosis bacteria carried by animals, essentially cattle. Efforts to reduce the ...