| Value | Category | Cases | |
|---|---|---|---|
| 1 | Convenience in work | 5432 |
18.5%
|
| 2 | Studying, training | 510 |
1.7%
|
| 3 | housekeeping | 614 |
2.1%
|
| 4 | Old, ill | 175 |
0.6%
|
| 5 | Others | 114 |
0.4%
|
| Sysmiss | 22536 |