| Value | Category | Cases | |
|---|---|---|---|
| 1 | Open fire | 14399 |
89.9%
|
| 2 | Open stove | 1270 |
7.9%
|
| 3 | Closed stove | 341 |
2.1%
|
| 6 | Other | 3 |
0%
|
| 9 | Missing | 2 |
0%
|
| Sysmiss | 155 |