Value |
Category |
0 |
None |
1 |
1 to 14 hours (except tt1980, tt1990 and tt2000) |
2 |
15 to 29 hours (except de1970, ps2017, tt1980, tt1990, tt2000, and ve1971) |
3 |
30 to 39 hours (except de1970, ps2017, tt1980, tt1990, tt2000, and ve1971) |
4 |
40-48 hours (except il1972, tt1980, tt1990, and tt2000) |
5 |
49 hours or more (except il1972 and tt2000) |
8 |
Unknown |
9 |
NIU (not in universe) |
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.