| Value | Category | Cases | |
|---|---|---|---|
| 1 | Old/ illness | 2061 |
8.6%
|
| 2 | Housekeeping | 5208 |
21.8%
|
| 3 | Studying or Training | 7068 |
29.6%
|
| 4 | Others | 836 |
3.5%
|
| Sysmiss | 8668 |