| Value |
Category |
| 1 |
1 week - less than 1 month |
| 2 |
1 month - less than 2 months |
| 3 |
2 months - less than 3 months |
| 4 |
3 months - less than 4 months |
| 5 |
4 months - less than 5 months |
| 6 |
5 months - less than 6 months |
| 7 |
6 months - less than 1 year |
| 8 |
1 year - less than 2 years |
| 9 |
2 years - less than 3 years |
| 10 |
3 years or more |
| 11 |
Don't know |
| 88 |
Not applicable |
| 99 |
Unspecified |
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.