| Value | Category | Cases | |
|---|---|---|---|
| 1 | Convenience in work | 5204 |
17.9%
|
| 2 | Studying, training | 30 |
0.1%
|
| 3 | housekeeping | 205 |
0.7%
|
| 4 | Old, ill | 54 |
0.2%
|
| 5 | Others | 52 |
0.2%
|
| Sysmiss | 23604 |