| Value | Category | 
|---|---|
| 1 | interview completed | 
| 2 | refusal converted | 
| 3 | partly completed | 
| 4 | status not determined | 
| 5 | no usable information | 
| 6 | dwelling unit did not exist | 
| 7 | dwelling unit is vacant | 
| 8 | dwelling unit under construction | 
| 9 | not eligible | 
| 10 | no contact | 
| 11 | refusal |