| Value | Category | Cases | |
|---|---|---|---|
| 1 | Convenience in work | 4916 |
18.3%
|
| 2 | Studying, training | 33 |
0.1%
|
| 3 | housekeeping | 194 |
0.7%
|
| 4 | Old, ill | 46 |
0.2%
|
| 5 | Others | 96 |
0.4%
|
| Sysmiss | 21535 |