| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | None | 24 |
23.5%
|
| 1 | 27 |
26.5%
|
|
| 2 | 18 |
17.6%
|
|
| 3 | 13 |
12.7%
|
|
| 4 | 2 |
2%
|
|
| 5 | 5 |
4.9%
|
|
| 6 | 1 |
1%
|
|
| 7 | 1 |
1%
|
|
| 8 | 2 |
2%
|
|
| 9 | 1 |
1%
|
|
| 10 | 1 |
1%
|
|
| 15 | 1 |
1%
|
|
| 23 | 1 |
1%
|
|
| 35 | 1 |
1%
|
|
| 40 | 2 |
2%
|
|
| 42 | 1 |
1%
|
|
| 300 | 1 |
1%
|
|
| Sysmiss | 498 |