| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 10 |
6.6%
|
| 0 | 117 |
77.5%
|
|
| 1 | 1 |
0.7%
|
|
| 2 | 1 |
0.7%
|
|
| 10 | 2 |
1.3%
|
|
| 12 | 1 |
0.7%
|
|
| 15 | 1 |
0.7%
|
|
| 20 | 5 |
3.3%
|
|
| 25 | 1 |
0.7%
|
|
| 30 | 1 |
0.7%
|
|
| 40 | 3 |
2%
|
|
| 45 | 1 |
0.7%
|
|
| 50 | 1 |
0.7%
|
|
| 60 | 1 |
0.7%
|
|
| 70 | 2 |
1.3%
|
|
| 75 | 1 |
0.7%
|
|
| 80 | 2 |
1.3%
|