Value | Category |
---|---|
-5 | other |
-4 | missing data |
-3 | refused to answer |
-2 | not applicable |
-1 | do not know |
1 | less than 30 minutes |
2 | less than 1 hour but more than 30 minutes |
3 | less than 2 hours but more than 1 hour |
4 | more than 2 hours |
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