| Value | Category | Cases | |
|---|---|---|---|
| 1 | Convenience in work | 5026 |
17.4%
|
| 2 | Studying, training | 79 |
0.3%
|
| 3 | housekeeping | 312 |
1.1%
|
| 4 | Old, ill | 87 |
0.3%
|
| 5 | Others | 92 |
0.3%
|
| Sysmiss | 23213 |