| Value | Category | Cases | |
|---|---|---|---|
| 1 | Convenience in work | 5594 |
19.3%
|
| 2 | Studying, training | 49 |
0.2%
|
| 3 | housekeeping | 167 |
0.6%
|
| 4 | Old, ill | 43 |
0.1%
|
| 5 | Others | 198 |
0.7%
|
| Sysmiss | 22908 |