| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 4 |
1.2%
|
| 0 | 52 |
15.1%
|
|
| 3 | 2 |
0.6%
|
|
| 10 | 3 |
0.9%
|
|
| 20 | 1 |
0.3%
|
|
| 30 | 1 |
0.3%
|
|
| 40 | 1 |
0.3%
|
|
| 50 | 12 |
3.5%
|
|
| 55 | 1 |
0.3%
|
|
| 70 | 7 |
2%
|
|
| 80 | 4 |
1.2%
|
|
| 90 | 3 |
0.9%
|
|
| 95 | 2 |
0.6%
|
|
| 100 | 251 |
73%
|
|
| Sysmiss | 33 |