| Value | Category | Cases | |
|---|---|---|---|
| 1 | Convenience in work | 5713 |
22%
|
| 2 | Studying, training | 207 |
0.8%
|
| 3 | housekeeping | 315 |
1.2%
|
| 4 | Old, ill | 89 |
0.3%
|
| 5 | Others | 2 |
0%
|
| Sysmiss | 19620 |