| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 45 |
4.2%
|
| 0 | 265 |
24.9%
|
|
| 1 | 178 |
16.7%
|
|
| 2 | 131 |
12.3%
|
|
| 3 | 71 |
6.7%
|
|
| 4 | 54 |
5.1%
|
|
| 5 | 73 |
6.9%
|
|
| 6 | 21 |
2%
|
|
| 7 | 22 |
2.1%
|
|
| 8 | 27 |
2.5%
|
|
| 9 | 12 |
1.1%
|
|
| 10 | 41 |
3.9%
|
|
| 11 | 7 |
0.7%
|
|
| 12 | 12 |
1.1%
|
|
| 13 | 7 |
0.7%
|
|
| 14 | 6 |
0.6%
|
|
| 15 | 19 |
1.8%
|
|
| 16 | 1 |
0.1%
|
|
| 17 | 2 |
0.2%
|
|
| 18 | 2 |
0.2%
|
|
| 19 | 4 |
0.4%
|
|
| 20 | 16 |
1.5%
|
|
| 21 | 3 |
0.3%
|
|
| 22 | 1 |
0.1%
|
|
| 23 | 1 |
0.1%
|
|
| 25 | 3 |
0.3%
|
|
| 28 | 3 |
0.3%
|
|
| 29 | 2 |
0.2%
|
|
| 30 | 6 |
0.6%
|
|
| 32 | 1 |
0.1%
|
|
| 35 | 2 |
0.2%
|
|
| 40 | 1 |
0.1%
|
|
| 43 | 4 |
0.4%
|
|
| 50 | 7 |
0.7%
|
|
| 52 | 1 |
0.1%
|
|
| 55 | 1 |
0.1%
|
|
| 56 | 1 |
0.1%
|
|
| 60 | 1 |
0.1%
|
|
| 70 | 1 |
0.1%
|
|
| 77 | 1 |
0.1%
|
|
| 85 | 1 |
0.1%
|
|
| 97 | 1 |
0.1%
|
|
| 150 | 2 |
0.2%
|
|
| 250 | 1 |
0.1%
|
|
| 300 | 1 |
0.1%
|
|
| 1100 | 1 |
0.1%
|
|
| Sysmiss | 600 |