| Value | Category | Cases | |
|---|---|---|---|
| 1 | Convenience in work | 22291 |
18.9%
|
| 2 | Studying, training | 676 |
0.6%
|
| 3 | housekeeping | 1202 |
1%
|
| 4 | Old, ill | 470 |
0.4%
|
| 5 | Others | 166 |
0.1%
|
| Sysmiss | 93347 |