| Characteristics Study Site | Total n (%) | Bacteria | |
| Basket n (%) | Trolley n (%) | ||
| Mall A | 16 (28.6) | 8 (50) | 8 (50) |
| Mall B | 8 (14.3) | 3 (37.5) | 5 (62.5) |
| Mall C | 14 (25) | 4 (28.6) | 10 (71.4) |
| Mall D | 18 (32.1) | 5 (27.8) | 13 (72.2) |