| Value | Category | Cases | |
|---|---|---|---|
| -99 | 13 |
3.3%
|
|
| 1 | Not effective at all | 5 |
1.3%
|
| 2 | 8 |
2%
|
|
| 3 | 17 |
4.3%
|
|
| 4 | 17 |
4.3%
|
|
| 5 | 43 |
10.9%
|
|
| 6 | 28 |
7.1%
|
|
| 7 | 32 |
8.1%
|
|
| 8 | 29 |
7.3%
|
|
| 9 | 19 |
4.8%
|
|
| 10 | Very effective | 16 |
4%
|
| 11 | Don't know | 169 |
42.7%
|
| Sysmiss | 11 |