| Value | Category | Cases | |
|---|---|---|---|
| 1 | Convenience in work | 7665 |
25.9%
|
| 2 | Studying, training | 98 |
0.3%
|
| 3 | housekeeping | 155 |
0.5%
|
| 4 | Old, ill | 91 |
0.3%
|
| 5 | Others | 312 |
1.1%
|
| Sysmiss | 21329 |