Wave 2 retention rates and replenishment sample sizes for smokers
| City | Shenyang | Shanghai | Yinchuan | Changsha | Beijing | Guangzhou |
| Wave 1 n | 781 | 784 | 791 | 800 | 785 | 791 |
| Lost | 198 | 81 | 132 | 152 | 75 | 231 |
| Retained | 583 (74.7) | 703 (89.7) | 659 (83.3) | 648 (81.0) | 710 (90.5) | 560 (70.8) |
| Replenished | 198 | 77 | 101 | 98 | 54 | 236 |