| Value | Category |
|---|---|
| -9 | Don't know |
| -8 | Refuse |
| -5 | Not applicable |
| -3 | Missing |
| -2 | Not asked in Phase 3 |
| 1 | No other person within hearing range at any time |
| 2 | 1+ persons within hearing range for part of the interview |
| 3 | 1+ persons within hearing range for all of the interview |
| Sysmiss |