Table A1.
Summary of store characteristics and categorization criteria
| Big-box stores | Mid/high-end grocery stores | Dollar stores | Local stores | ||
|---|---|---|---|---|---|
| Employee size | Min | 65 | 30 | 4 | 1 |
| Max | 500 | 350 | 30 | 150 | |
| Median | 250 | 135 | 7 | 5 | |
| Mean | 251 | 120 | 10 | 15 | |
| S.D. | 121 | 85 | 11 | 35 | |
| Sales Volume (in thousands) | Min | 10280 | 7043 | 600 | 54 |
| Max | 79073 | 79989 | 1423 | 67403 | |
| Median | 39537 | 24651 | 1050 | 940 | |
| Mean | 39748 | 26795 | 1319 | 6696 | |
| S.D. | 19178 | 19656 | 706 | 19156 | |
| Store types and selection criteria | Warehouse clubs and supercenters that sell groceries | Department stores and regional supermarket chains that sell groceries with an employee size greater than 25 and sales volume greater than 5 million. | Discount stores of dollar chains | Local supermarkets, independent grocery stores, limited assortment supermarkets, superettes, and specialty food stores | |
| NAICS code | 452311 (warehouse clubs and supercenters) | 452210 (Department stores) and 445110 (Supermarkets and Other Grocery (except Convenience) Stores) | NAICS code 452319 (All other general merchandise stores) | Rest of the stores from 445110 which do not fulfill the criteria of other 3 categories | |
| Example store names | Walmart, Sam's Club, and Costco | Kroger, Target, Trader Joe's, Whole Foods Market, Giant Eagle, and Meijer | Dollar General, Dollar store, Family Dollar, and Dollar Tree | Raisin rack natural food market, The Hills market, Saraga international grocery, Istanbul supermarket, Yasmin international market | |