| Value | Category | Cases | |
|---|---|---|---|
| 1 | Convenience in work | 23713 |
22.5%
|
| 2 | Studying, training | 792 |
0.8%
|
| 3 | housekeeping | 1015 |
1%
|
| 4 | Old, ill | 432 |
0.4%
|
| 5 | Others | 7 |
0%
|
| Sysmiss | 79627 |