| Value | Category | Cases | |
|---|---|---|---|
| 1 | Refusal | 18 |
4.7%
|
| 2 | Non-contact | 318 |
82.8%
|
| 3 | Dwelling cannot be found | 30 |
7.8%
|
| 4 | Others | 18 |
4.7%
|
| Sysmiss | 22880 |