| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 2 | 1 |
1.4%
|
|
| 3 | 1 |
1.4%
|
|
| 5 | 8 |
11.4%
|
|
| 7 | 2 |
2.9%
|
|
| 8 | 1 |
1.4%
|
|
| 10 | 14 |
20%
|
|
| 12 | 2 |
2.9%
|
|
| 15 | 15 |
21.4%
|
|
| 16 | 1 |
1.4%
|
|
| 17 | 2 |
2.9%
|
|
| 20 | 13 |
18.6%
|
|
| 26 | 1 |
1.4%
|
|
| 30 | 7 |
10%
|
|
| 60 | 1 |
1.4%
|
|
| 70 | 1 |
1.4%
|
|
| Sysmiss | 735 |