Value | Category |
---|---|
-3 | illegal missing |
-2 | dont know |
-1 | refuse |
1 | It was main use - more than 80% |
2 | It was important use - 60-80% |
3 | it was medium use - 40-60% |
4 | it was less important use - 20-40% |
5 | It was not significant use - Less than 20% |
6 | It was not used - 0% |
Sysmiss |