The National Retail Data Monitor (NRDM) is a public health surveillance tool that collects and analyzes daily sales data for over-the-counter (OTC) health-care products. NRDM collects sales data for selected OTC health-care products in near real time from >15,000 retail stores and makes them available to public health officials. NRDM is one of the first examples of a national data utility for public health surveillance that collects, redistributes, and analyzes daily sales-volume data of selected health-care products, thereby reducing the effort for both data providers and health departments.
Wagner MM, Tsui FC, Espino J, Hogan W, Hutman J, Hersh J, Neill D, Moore A, Parks G, Lewis C, Aller R. (2004). National Retail Data Monitor for public health surveillance. MMWR supplements, (53)