| Value | Category | Cases | |
|---|---|---|---|
| 1 | Old/ illness | 2062 |
8.9%
|
| 2 | Housekeeping | 4676 |
20.2%
|
| 3 | Studying or Training | 6840 |
29.5%
|
| 4 | Others | 817 |
3.5%
|
| Sysmiss | 8796 |