| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 6 |
4%
|
| -4 | Too many to count | 46 |
30.5%
|
| 3 | 3 |
2%
|
|
| 4 | 2 |
1.3%
|
|
| 5 | 1 |
0.7%
|
|
| 6 | 1 |
0.7%
|
|
| 7 | 1 |
0.7%
|
|
| 9 | 1 |
0.7%
|
|
| 10 | 1 |
0.7%
|
|
| 15 | 1 |
0.7%
|
|
| NA | 88 |
58.3%
|