| Value | Category | Cases | |
|---|---|---|---|
| 1 | a. Within 1 week | 35 |
1%
|
| 2 | b. Within 1 month | 20 |
0.6%
|
| 3 | c. Within 3 months | 1 |
0%
|
| 4 | d. Within 6 months | 1 |
0%
|
| Missing value | 3489 |
98.4%
|