| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 11 |
5.5%
|
| 0 | 3 |
1.5%
|
|
| 5 | 1 |
0.5%
|
|
| 15 | 1 |
0.5%
|
|
| 20 | 2 |
1%
|
|
| 48 | 1 |
0.5%
|
|
| 50 | 1 |
0.5%
|
|
| 55 | 1 |
0.5%
|
|
| 60 | 1 |
0.5%
|
|
| 70 | 2 |
1%
|
|
| 80 | 3 |
1.5%
|
|
| 85 | 2 |
1%
|
|
| 90 | 4 |
2%
|
|
| 94 | 1 |
0.5%
|
|
| 95 | 2 |
1%
|
|
| 98 | 3 |
1.5%
|
|
| 99 | 1 |
0.5%
|
|
| 100 | 159 |
79.9%
|
|
| Sysmiss | 146 |