| Value | Category | Cases | |
|---|---|---|---|
| 1 | Convenience in work | 24016 |
20.6%
|
| 2 | Studying, training | 933 |
0.8%
|
| 3 | housekeeping | 952 |
0.8%
|
| 4 | Old, ill | 335 |
0.3%
|
| 5 | Others | 288 |
0.2%
|
| Sysmiss | 89915 |