| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 5 |
2.4%
|
| 10 | 4 |
2%
|
|
| 15 | 3 |
1.5%
|
|
| 20 | 20 |
9.8%
|
|
| 22 | 1 |
0.5%
|
|
| 25 | 11 |
5.4%
|
|
| 30 | 33 |
16.1%
|
|
| 35 | 20 |
9.8%
|
|
| 40 | 26 |
12.7%
|
|
| 45 | 8 |
3.9%
|
|
| 46 | 1 |
0.5%
|
|
| 50 | 34 |
16.6%
|
|
| 55 | 1 |
0.5%
|
|
| 60 | 19 |
9.3%
|
|
| 65 | 2 |
1%
|
|
| 70 | 2 |
1%
|
|
| 75 | 1 |
0.5%
|
|
| 80 | 5 |
2.4%
|
|
| 85 | 1 |
0.5%
|
|
| 100 | 8 |
3.9%
|
|
| Sysmiss | 155 |