| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 15 |
5%
|
| 0 | 9 |
3%
|
|
| 5 | 5 |
1.7%
|
|
| 6 | 1 |
0.3%
|
|
| 10 | 5 |
1.7%
|
|
| 20 | 6 |
2%
|
|
| 25 | 3 |
1%
|
|
| 30 | 11 |
3.6%
|
|
| 35 | 3 |
1%
|
|
| 40 | 7 |
2.3%
|
|
| 45 | 1 |
0.3%
|
|
| 50 | 25 |
8.3%
|
|
| 55 | 2 |
0.7%
|
|
| 56 | 1 |
0.3%
|
|
| 60 | 35 |
11.6%
|
|
| 65 | 3 |
1%
|
|
| 70 | 31 |
10.2%
|
|
| 75 | 5 |
1.7%
|
|
| 80 | 38 |
12.5%
|
|
| 85 | 2 |
0.7%
|
|
| 90 | 7 |
2.3%
|
|
| 95 | 1 |
0.3%
|
|
| 98 | 2 |
0.7%
|
|
| 100 | 85 |
28.1%
|
|
| Sysmiss | 469 |