| Value | Category | Cases | |
|---|---|---|---|
| -99 | 93 |
31.1%
|
|
| 1 | Not effective at all | 11 |
3.7%
|
| 2 | 11 |
3.7%
|
|
| 3 | 16 |
5.4%
|
|
| 4 | 16 |
5.4%
|
|
| 5 | 17 |
5.7%
|
|
| 6 | 10 |
3.3%
|
|
| 7 | 7 |
2.3%
|
|
| 8 | 8 |
2.7%
|
|
| 9 | 13 |
4.3%
|
|
| 10 | Very effective | 30 |
10%
|
| 11 | Don't know | 67 |
22.4%
|
| Sysmiss | 76 |