| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. No effect | 3 |
9.1%
|
| 2 | 2. Small | 5 |
15.2%
|
| 3 | 3. Moderate | 8 |
24.2%
|
| 4 | 4. Large | 16 |
48.5%
|
| 9 | 9. Don't know | 1 |
3%
|
| Sysmiss | 966 |