| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 12 |
8.3%
|
| 0 | 6 |
4.1%
|
|
| 5 | 1 |
0.7%
|
|
| 10 | 5 |
3.4%
|
|
| 15 | 2 |
1.4%
|
|
| 20 | 14 |
9.7%
|
|
| 23 | 1 |
0.7%
|
|
| 25 | 6 |
4.1%
|
|
| 28 | 1 |
0.7%
|
|
| 30 | 14 |
9.7%
|
|
| 40 | 11 |
7.6%
|
|
| 42 | 1 |
0.7%
|
|
| 45 | 1 |
0.7%
|
|
| 47 | 1 |
0.7%
|
|
| 50 | 21 |
14.5%
|
|
| 55 | 2 |
1.4%
|
|
| 60 | 15 |
10.3%
|
|
| 65 | 5 |
3.4%
|
|
| 68 | 1 |
0.7%
|
|
| 70 | 8 |
5.5%
|
|
| 75 | 2 |
1.4%
|
|
| 80 | 5 |
3.4%
|
|
| 90 | 3 |
2.1%
|
|
| 100 | 7 |
4.8%
|
|
| Sysmiss | 456 |