| Value |
Category |
| 1 |
really improved |
| 2 |
some improvements |
| 3 |
same |
| 4 |
some deterioration |
| 5 |
really deteriorated |
| 6 |
constructed this year |
| 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.