| Value |
Category |
| 1 |
Very effective |
| 2 |
Effective |
| 3 |
Moderately effective |
| 4 |
Slightly effective |
| 5 |
Not effective |
| 95 |
Missing |
| 99 |
NA |
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.