| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 2 |
1.6%
|
| 5 | 5 |
4%
|
|
| 9 | 1 |
0.8%
|
|
| 10 | 19 |
15.1%
|
|
| 12 | 2 |
1.6%
|
|
| 13 | 1 |
0.8%
|
|
| 14 | 1 |
0.8%
|
|
| 15 | 30 |
23.8%
|
|
| 18 | 1 |
0.8%
|
|
| 20 | 19 |
15.1%
|
|
| 22 | 2 |
1.6%
|
|
| 25 | 13 |
10.3%
|
|
| 30 | 7 |
5.6%
|
|
| 35 | 4 |
3.2%
|
|
| 40 | 3 |
2.4%
|
|
| 45 | 2 |
1.6%
|
|
| 50 | 8 |
6.3%
|
|
| 60 | 1 |
0.8%
|
|
| 100 | 5 |
4%
|
|
| Sysmiss | 234 |