| Value | Category | 
|---|---|
| 1 | is a survey ZD | 
| 2 | temporarily absent (a) no polls ZD | 
| 3 | refused to(a) lack of intelligence survey ZD | 
| 4 | arrived (a)is a survey ZD | 
| 5 | arrived (a)and temporarily absent (a) no polls ZD | 
| 6 | arrived (a)and refused to (a) lack of intelligence survey ZD | 
| 7 | left (a) the lack of household survey ZD | 
| Sysmiss |