| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 2 | 9 |
6%
|
|
| 3 | 2 |
1.3%
|
|
| 4 | 2 |
1.3%
|
|
| 5 | 1 |
0.7%
|
|
| 7 | 1 |
0.7%
|
|
| 10 | 1 |
0.7%
|
|
| 44 | 1 |
0.7%
|
|
| 67 | 1 |
0.7%
|
|
| NA | 133 |
88.1%
|