| Value |
Category |
Cases |
|
| 1 |
Once a year |
41 |
|
| 2 |
once in two years |
9 |
|
| 3 |
Once in three years |
13 |
|
| 4 |
Less than once in 3 years |
20 |
|
| 77 |
Don't know |
0 |
|
| Sysmiss |
|
5930 |
|
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.
