| Value |
Category |
| 0 |
not applicable |
| 1 |
3 months |
| 2 |
4-6 months |
| 3 |
7-9 months |
| 4 |
10-12 months |
| 5 |
13 months or more |
| 9 |
no answer |
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.