| Value |
Category |
| 1 |
During last week |
| 2 |
One month ago |
| 3 |
Three months ago |
| 4 |
More than 3 months ago |
| 5 |
Never broke down |
| 8 |
DK |
| 9 |
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.
