ao015
General information
| Question text: | Is an air cleaner/filter used in your residence (stand-alone or central)? |
| Answer type: | Radio buttons |
| Answer options: | 1 Yes 2 No 3 Unsure |
| Label: | air cleaner in residence |
| Empty allowed: | One-time warning |
| Error allowed: | Not allowed |
| Multiple instances: | No |

