| Value | Category | Cases | |
|---|---|---|---|
| 1 | Old/ illness | 8148 |
9%
|
| 2 | Housekeeping | 18189 |
20%
|
| 3 | Studying or Training | 27556 |
30.3%
|
| 4 | Others | 3245 |
3.6%
|
| Sysmiss | 33856 |