| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 8 |
4.4%
|
| 2 | 6 |
3.3%
|
|
| 3 | 13 |
7.1%
|
|
| 4 | 14 |
7.7%
|
|
| 5 | 19 |
10.4%
|
|
| 6 | 23 |
12.6%
|
|
| 7 | 22 |
12.1%
|
|
| 8 | 28 |
15.4%
|
|
| 9 | 17 |
9.3%
|
|
| 10 | Very effective | 32 |
17.6%
|
| -99 | 13 | ||
| 11 | Don't know | 103 | |
| Sysmiss | 54 |