| Value | Category | Cases | |
|---|---|---|---|
| 1 | Convenience in work | 6073 |
21.3%
|
| 2 | Studying, training | 232 |
0.8%
|
| 3 | housekeeping | 220 |
0.8%
|
| 4 | Old, ill | 94 |
0.3%
|
| 5 | Others | 228 |
0.8%
|
| Sysmiss | 21631 |