| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 1 |
0.7%
|
| 1 | 28 |
19.9%
|
|
| 2 | 37 |
26.2%
|
|
| 3 | 14 |
9.9%
|
|
| 4 | 7 |
5%
|
|
| 5 | 3 |
2.1%
|
|
| 6 | 5 |
3.5%
|
|
| 7 | 2 |
1.4%
|
|
| 8 | 3 |
2.1%
|
|
| 10 | 4 |
2.8%
|
|
| 11 | 1 |
0.7%
|
|
| 12 | 12 |
8.5%
|
|
| 13 | 2 |
1.4%
|
|
| 14 | 4 |
2.8%
|
|
| 15 | 5 |
3.5%
|
|
| 16 | 6 |
4.3%
|
|
| 17 | 3 |
2.1%
|
|
| 19 | 2 |
1.4%
|
|
| 20 | 1 |
0.7%
|
|
| 21 | 1 |
0.7%
|
|
| Sysmiss | 204 |