| Value | Category | Cases | |
|---|---|---|---|
| 1 | Convenience in work | 5494 |
18.8%
|
| 2 | Studying, training | 202 |
0.7%
|
| 3 | housekeeping | 485 |
1.7%
|
| 4 | Old, ill | 164 |
0.6%
|
| 5 | Others | 35 |
0.1%
|
| Sysmiss | 22907 |