| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 123 |
20.6%
|
| 0 | 438 |
73.4%
|
|
| 5 | 3 |
0.5%
|
|
| 10 | 1 |
0.2%
|
|
| 20 | 1 |
0.2%
|
|
| 25 | 1 |
0.2%
|
|
| 30 | 1 |
0.2%
|
|
| 45 | 1 |
0.2%
|
|
| 50 | 6 |
1%
|
|
| 60 | 1 |
0.2%
|
|
| 70 | 1 |
0.2%
|
|
| 80 | 4 |
0.7%
|
|
| 90 | 3 |
0.5%
|
|
| 95 | 2 |
0.3%
|
|
| 97 | 1 |
0.2%
|
|
| 98 | 1 |
0.2%
|
|
| 99 | 1 |
0.2%
|
|
| 100 | 8 |
1.3%
|
|
| Sysmiss | 104 |