| Value | Category | Cases | |
|---|---|---|---|
| 1 | Within 1 month or less | 3 |
20%
|
| 2 | In more than 1 month to 3 month | 4 |
26.7%
|
| 3 | In more than 3 month | 8 |
53.3%
|
| Sysmiss | 9984 |