| Value | Category | Cases | |
|---|---|---|---|
| 1 | Convenience in work | 5174 |
18.4%
|
| 2 | Studying, training | 125 |
0.4%
|
| 3 | housekeeping | 414 |
1.5%
|
| 4 | Old, ill | 143 |
0.5%
|
| 5 | Others | 27 |
0.1%
|
| Sysmiss | 22203 |