| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | 686 |
87.8%
|
|
| 5 | 3 |
0.4%
|
|
| 10 | 27 |
3.5%
|
|
| 15 | 1 |
0.1%
|
|
| 20 | 27 |
3.5%
|
|
| 25 | 3 |
0.4%
|
|
| 30 | 15 |
1.9%
|
|
| 40 | 3 |
0.4%
|
|
| 50 | 7 |
0.9%
|
|
| 60 | 2 |
0.3%
|
|
| 70 | 1 |
0.1%
|
|
| 90 | 2 |
0.3%
|
|
| 95 | 1 |
0.1%
|
|
| 100 | 3 |
0.4%
|
|
| Sysmiss | 315 |