| Value | Category | Cases | |
|---|---|---|---|
| 1 | Old/ illness | 2186 |
9.2%
|
| 2 | Housekeeping | 5087 |
21.3%
|
| 3 | Studying or Training | 6840 |
28.7%
|
| 4 | Others | 854 |
3.6%
|
| Sysmiss | 8870 |