| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
2.2%
|
| 2 | 3 |
3.2%
|
|
| 3 | 7 |
7.5%
|
|
| 4 | 5 |
5.4%
|
|
| 5 | 16 |
17.2%
|
|
| 6 | 15 |
16.1%
|
|
| 7 | 16 |
17.2%
|
|
| 8 | 21 |
22.6%
|
|
| 9 | 5 |
5.4%
|
|
| 10 | Very effective | 3 |
3.2%
|
| -99 | 7 | ||
| 11 | Don't know | 136 | |
| Sysmiss | 24 |