Table 4 Reasons for altered numbers of cases at different stages
Group | 3 days after | 6 months after | 1 year after | |
|---|---|---|---|---|
MSG | Death | 0 | 1 | 4 |
Failure of normal follow-up | 0 | 1 | 0 | |
Failure of catheterization | 1 | / | / | |
Failure of statistical time | 0 | 2 | / | |
Statistical cases | 31 | 27 | 23 | |
OPSG | Death | 0 | 2 | 3 |
Failure of normal follow-up | 0 | 3 | 1 | |
Failure of catheterization | 2 | 1 | 1 | |
Statistical cases | 42 | 36 | 28 | |