| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 8 |
3.8%
|
| 0 | 190 |
89.2%
|
|
| 1 | 2 |
0.9%
|
|
| 2 | 1 |
0.5%
|
|
| 3 | 1 |
0.5%
|
|
| 7 | 1 |
0.5%
|
|
| 10 | 1 |
0.5%
|
|
| 20 | 1 |
0.5%
|
|
| 30 | 1 |
0.5%
|
|
| 40 | 1 |
0.5%
|
|
| 50 | 1 |
0.5%
|
|
| 65 | 1 |
0.5%
|
|
| 80 | 2 |
0.9%
|
|
| 99 | 1 |
0.5%
|
|
| 100 | 1 |
0.5%
|
|
| Sysmiss | 145 |