| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effectively at all | 1 |
0.5%
|
| 2 | 1 |
0.5%
|
|
| 3 | 4 |
2.1%
|
|
| 4 | 4 |
2.1%
|
|
| 5 | 20 |
10.7%
|
|
| 6 | 63 |
33.7%
|
|
| 7 | 47 |
25.1%
|
|
| 8 | 17 |
9.1%
|
|
| 9 | 12 |
6.4%
|
|
| 10 | Very effectively | 18 |
9.6%
|
| 11 | Don't know | 139 | |
| Sysmiss | 70 |