| Status | Original tracking number | Unqualified data description | Effective tracking number | Further screening principle | Qualified screening number |
| Survivors | 12,699 | a. Repeat case: 25 b. Tracking individuals have no data: 40 c. Survivors have death registration: 104 | 12,530 | a. Default-free b. Gender, province, census register consistent c. Age gap is 3 to 5 d. Education gap is positive | 8703 |
| Death | 2539 | a. Repeat case: 13 | 2506 | a. Default-free | 1742 |