| Value |
Category |
| -9 |
NO RESPONSE |
| -7 |
DON'T KNOW |
| 1 |
HEATING APPARATUS |
| 2 |
GAS HEATER |
| 3 |
COAL STOVE |
| 4 |
RESISTANCE HEATER |
| 5 |
OTHER |
| Sysmiss |
|
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.