| Value | Category | Cases | |
|---|---|---|---|
| 1 | Open fire | 75 |
20.3%
|
| 2 | Open stove | 286 |
77.5%
|
| 3 | Closed stove | 2 |
0.5%
|
| 6 | Other | 6 |
1.6%
|
| 9 | Missing | 0 |
0%
|
| Sysmiss | 15 |