| Value | Category | Cases | |
|---|---|---|---|
| 1 | Convenience in work | 5369 |
18.2%
|
| 2 | Studying, training | 186 |
0.6%
|
| 3 | housekeeping | 466 |
1.6%
|
| 4 | Old, ill | 108 |
0.4%
|
| 5 | Others | 97 |
0.3%
|
| Sysmiss | 23259 |