| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 50 |
8%
|
| 0 | None | 228 |
36.4%
|
| 1 | 60 |
9.6%
|
|
| 2 | 44 |
7%
|
|
| 3 | 30 |
4.8%
|
|
| 4 | 9 |
1.4%
|
|
| 5 | 49 |
7.8%
|
|
| 6 | 3 |
0.5%
|
|
| 7 | 2 |
0.3%
|
|
| 8 | 3 |
0.5%
|
|
| 10 | 50 |
8%
|
|
| 12 | 4 |
0.6%
|
|
| 13 | 2 |
0.3%
|
|
| 15 | 20 |
3.2%
|
|
| 20 | 21 |
3.3%
|
|
| 25 | 5 |
0.8%
|
|
| 30 | 26 |
4.1%
|
|
| 35 | 3 |
0.5%
|
|
| 40 | 10 |
1.6%
|
|
| 45 | 1 |
0.2%
|
|
| 50 | 4 |
0.6%
|
|
| 70 | 1 |
0.2%
|
|
| 100 | 2 |
0.3%
|
|
| Sysmiss | 1368 |