| Value |
Category |
| 1 |
Less than a month |
| 2 |
1 month to less than 2 months |
| 3 |
2 months to less than 3 months |
| 4 |
3 months to less than 4 months |
| 5 |
4 months to less than 6 months |
| 6 |
6 months to less than 1 year |
| 7 |
1 year to less than 3 years |
| 8 |
3 years or more |
| 9 |
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.
