| Value | Category |
|---|---|
| 0 | |
| 1 | Inconvenient to use |
| 2 | Fire hazards |
| 3 | Not available |
| 4 | Don't know it exists |
| 5 | Large initial investment |
| 6 | Other |
| CONSTRUCTION PROBLEM | |
| COSTLY | |
| DON'T KNOW HPW TO MAKE | |
| GAS WILL COME | |
| LAND LORD DOESN'T ALLOW | |
| NO INTERESTED | |
| NO NEED | |
| NO REASON | |
| NOT INTERESTED | |
| NOT NECESSARY | |
| NOT NEED | |
| NOT NEEDED |