| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 6 |
7.7%
|
| 0 | 34 |
43.6%
|
|
| 2 | 3 |
3.8%
|
|
| 3 | 3 |
3.8%
|
|
| 5 | 4 |
5.1%
|
|
| 8 | 2 |
2.6%
|
|
| 10 | 6 |
7.7%
|
|
| 11 | 1 |
1.3%
|
|
| 15 | 1 |
1.3%
|
|
| 18 | 2 |
2.6%
|
|
| 20 | 2 |
2.6%
|
|
| 30 | 1 |
1.3%
|
|
| 35 | 3 |
3.8%
|
|
| 40 | 1 |
1.3%
|
|
| 50 | 6 |
7.7%
|
|
| 60 | 1 |
1.3%
|
|
| 75 | 1 |
1.3%
|
|
| 80 | 1 |
1.3%
|
|
| Sysmiss | 267 |