| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 3 |
1.1%
|
| 0 | 5 |
1.8%
|
|
| 5 | 1 |
0.4%
|
|
| 10 | 8 |
2.9%
|
|
| 15 | 1 |
0.4%
|
|
| 20 | 10 |
3.6%
|
|
| 25 | 1 |
0.4%
|
|
| 30 | 16 |
5.8%
|
|
| 40 | 16 |
5.8%
|
|
| 50 | 26 |
9.4%
|
|
| 60 | 39 |
14.1%
|
|
| 65 | 4 |
1.4%
|
|
| 70 | 51 |
18.4%
|
|
| 75 | 6 |
2.2%
|
|
| 80 | 43 |
15.5%
|
|
| 85 | 6 |
2.2%
|
|
| 90 | 18 |
6.5%
|
|
| 95 | 2 |
0.7%
|
|
| 100 | 21 |
7.6%
|
|
| Sysmiss | 323 |