| Value | Category | Cases | |
|---|---|---|---|
| 1 | Convenience in work | 5670 |
19.6%
|
| 2 | Studying, training | 85 |
0.3%
|
| 3 | housekeeping | 271 |
0.9%
|
| 4 | Old, ill | 46 |
0.2%
|
| 5 | Others | 145 |
0.5%
|
| Sysmiss | 22705 |