| Value | Category | Cases | |
|---|---|---|---|
| 1 | Convenience in work | 5738 |
19.4%
|
| 2 | Studying, training | 287 |
1%
|
| 3 | housekeeping | 284 |
1%
|
| 4 | Old, ill | 126 |
0.4%
|
| 5 | Others | 30 |
0.1%
|
| Sysmiss | 23135 |