| Value | Category | Cases | |
|---|---|---|---|
| 1 | Convenience in work | 6120 |
20.8%
|
| 2 | Studying, training | 225 |
0.8%
|
| 3 | housekeeping | 246 |
0.8%
|
| 4 | Old, ill | 66 |
0.2%
|
| 5 | Others | 7 |
0%
|
| Sysmiss | 22791 |