"The Annenberg National Health Communication Survey (ANHCS) is designed to capture national trends relating health behavior and behavioral intentions to media exposure, health knowledge and beliefs, and policy preferences and beliefs. It is the only survey that is continuously in the field with a nationally representative sample, and it is presently one of few surveys emphasizing health communication and its possible outcomes. Since its inception in January 2005, ANHCS has collected data monthly from a nationally representative sample of adults in the United States. This data has been archived and will be made publicly available each year through this website." -Description from surveyhome page