| Value | Category | Cases | |
|---|---|---|---|
| 1 | Convenience in work | 5036 |
17.7%
|
| 2 | Studying, training | 164 |
0.6%
|
| 3 | housekeeping | 287 |
1%
|
| 4 | Old, ill | 120 |
0.4%
|
| 5 | Others | 55 |
0.2%
|
| Sysmiss | 22787 |