| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 3 |
2.3%
|
| 10 | 1 |
0.8%
|
|
| 20 | 4 |
3.1%
|
|
| 30 | 3 |
2.3%
|
|
| 40 | 4 |
3.1%
|
|
| 50 | 15 |
11.5%
|
|
| 60 | 12 |
9.2%
|
|
| 65 | 1 |
0.8%
|
|
| 70 | 39 |
29.8%
|
|
| 75 | 6 |
4.6%
|
|
| 80 | 31 |
23.7%
|
|
| 85 | 3 |
2.3%
|
|
| 88 | 1 |
0.8%
|
|
| 90 | 6 |
4.6%
|
|
| 92 | 1 |
0.8%
|
|
| 95 | 1 |
0.8%
|
|
| Sysmiss | 273 |