| Value |
Category |
| 1 |
Less than 3 months |
| 2 |
3 mo= to < 6 months |
| 3 |
6 mo= to < 12 months |
| 4 |
1 year to < 3 years |
| 5 |
3 years to < 5 years |
| 6 |
5 years or more |
| 7 |
Don’t know |
| 9 |
NR |
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.
