| Value | Category | Cases | |
|---|---|---|---|
| 1 | Convenience in work | 6494 |
22.5%
|
| 2 | Studying, training | 301 |
1%
|
| 3 | housekeeping | 347 |
1.2%
|
| 4 | Old, ill | 130 |
0.5%
|
| 5 | Others | 162 |
0.6%
|
| Sysmiss | 21442 |