| Value |
Category |
| 1 |
hour |
| 2 |
day |
| 3 |
week |
| 4 |
month |
| 5 |
3 months (quarter) |
| 6 |
year |
| 7 |
other |
| 77 |
refused |
| 88 |
don't know |
| 99 |
missing |
| 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.