| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 2 |
0.9%
|
| 0 | 104 |
44.6%
|
|
| 3 | 1 |
0.4%
|
|
| 4 | 2 |
0.9%
|
|
| 10 | 29 |
12.4%
|
|
| 15 | 6 |
2.6%
|
|
| 18 | 1 |
0.4%
|
|
| 20 | 16 |
6.9%
|
|
| 25 | 7 |
3%
|
|
| 30 | 4 |
1.7%
|
|
| 40 | 7 |
3%
|
|
| 45 | 2 |
0.9%
|
|
| 50 | 12 |
5.2%
|
|
| 55 | 1 |
0.4%
|
|
| 60 | 1 |
0.4%
|
|
| 70 | 7 |
3%
|
|
| 75 | 1 |
0.4%
|
|
| 80 | 8 |
3.4%
|
|
| 90 | 2 |
0.9%
|
|
| 100 | 20 |
8.6%
|
|
| Sysmiss | 127 |