| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | 41 |
27.2%
|
|
| 1 | 10 |
6.6%
|
|
| 2 | 5 |
3.3%
|
|
| 3 | 2 |
1.3%
|
|
| 4 | 1 |
0.7%
|
|
| 5 | 1 |
0.7%
|
|
| 7 | 1 |
0.7%
|
|
| 15 | 2 |
1.3%
|
|
| NA | 88 |
58.3%
|