| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 10 | 2 |
0.7%
|
|
| 20 | 3 |
1%
|
|
| 25 | 1 |
0.3%
|
|
| 30 | 9 |
3.1%
|
|
| 35 | 1 |
0.3%
|
|
| 40 | 9 |
3.1%
|
|
| 45 | 1 |
0.3%
|
|
| 50 | 18 |
6.3%
|
|
| 55 | 4 |
1.4%
|
|
| 60 | 41 |
14.2%
|
|
| 65 | 5 |
1.7%
|
|
| 70 | 66 |
22.9%
|
|
| 75 | 4 |
1.4%
|
|
| 80 | 100 |
34.7%
|
|
| 85 | 1 |
0.3%
|
|
| 90 | 23 |
8%
|
|
| Sysmiss | 472 |