If becomes available (pipe gas) and why not use it? (use code from column 4)
Categories
Value
Category
0
1
Inconvenient to use
2
Fire hazards
3
Not cheaper
4
No reason
5
Large initial investment
DON'T KNOW
NO NEED
NOT APPLICABLE
UNKNOWN
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.