| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | 11 |
5.7%
|
|
| 10 | 2 |
1%
|
|
| 15 | 1 |
0.5%
|
|
| 20 | 2 |
1%
|
|
| 30 | 1 |
0.5%
|
|
| 40 | 2 |
1%
|
|
| 50 | 1 |
0.5%
|
|
| 55 | 1 |
0.5%
|
|
| 60 | 3 |
1.6%
|
|
| 70 | 2 |
1%
|
|
| 75 | 1 |
0.5%
|
|
| 90 | 5 |
2.6%
|
|
| 95 | 5 |
2.6%
|
|
| 98 | 1 |
0.5%
|
|
| 99 | 2 |
1%
|
|
| 100 | 153 |
79.3%
|
|
| Sysmiss | 49 |