| Value | Category | Cases | |
|---|---|---|---|
| 1 | Convenience in work | 5834 |
19.7%
|
| 2 | Studying, training | 171 |
0.6%
|
| 3 | housekeeping | 251 |
0.8%
|
| 4 | Old, ill | 73 |
0.2%
|
| 5 | Others | 5 |
0%
|
| Sysmiss | 23225 |