| Value | Category | Cases | |
|---|---|---|---|
| 1 | Convenience in work | 16380 |
16.7%
|
| 2 | Studying, training | 203 |
0.2%
|
| 3 | housekeeping | 757 |
0.8%
|
| 4 | Old, ill | 235 |
0.2%
|
| 5 | Others | 350 |
0.4%
|
| Sysmiss | 79999 |