| Value | Category | Cases | |
|---|---|---|---|
| 1 | Old/ illness | 1819 |
8.4%
|
| 2 | Housekeeping | 4728 |
21.8%
|
| 3 | Studying or Training | 6555 |
30.2%
|
| 4 | Others | 1768 |
8.1%
|
| Sysmiss | 6861 |