“…Information Resources, Inc (IRI), collected weekly marketing data by Universal Product Code sales from a sample of stores in 50 markets and 30 categories, covering approximately 25% to 30% of consumer-packaged goods sales, and the data have been widely used in various academic studies. [21][22][23] This study used state-level syndicated sales data collected between January 1, 2018, and January 5, 2020, a period with 105 weekly data points. IRI projected state-level overall sales of convenience stores in 39 states (due to the limited number of stores in some states, IRI did not provide state-level sales data of tobacco products in Alaska, Delaware, Hawaii, Idaho, Kansas, Minnesota, Mississippi, Montana, Nebraska, New Jersey, and New Mexico).…”