| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 14 |
4.1%
|
| 2 | 19 |
5.5%
|
|
| 3 | 40 |
11.6%
|
|
| 4 | 31 |
9%
|
|
| 5 | 61 |
17.7%
|
|
| 6 | 69 |
20.1%
|
|
| 7 | 37 |
10.8%
|
|
| 8 | 35 |
10.2%
|
|
| 9 | 28 |
8.1%
|
|
| 10 | Very effective | 10 |
2.9%
|
| -99 | 58 | ||
| 11 | Don't know | 105 | |
| Sysmiss | 150 |