| Value | Category | Cases | |
|---|---|---|---|
| 1 | Old/ illness | 5680 |
9.4%
|
| 2 | Housekeeping | 14019 |
23.3%
|
| 3 | Studying or Training | 16355 |
27.1%
|
| 4 | Others | 1772 |
2.9%
|
| Sysmiss | 22416 |