| Value | Category | Cases | |
|---|---|---|---|
| 1 | Old/ illness | 8240 |
8.6%
|
| 2 | Housekeeping | 20529 |
21.4%
|
| 3 | Studying or Training | 28119 |
29.3%
|
| 4 | Others | 3806 |
4%
|
| Sysmiss | 35283 |