| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 21 |
6.9%
|
| 2 | 1 |
0.3%
|
|
| 3 | 3 |
1%
|
|
| 5 | 2 |
0.7%
|
|
| 6 | 1 |
0.3%
|
|
| 10 | 20 |
6.6%
|
|
| 15 | 23 |
7.5%
|
|
| 20 | 32 |
10.5%
|
|
| 25 | 22 |
7.2%
|
|
| 28 | 1 |
0.3%
|
|
| 30 | 55 |
18%
|
|
| 33 | 1 |
0.3%
|
|
| 35 | 8 |
2.6%
|
|
| 38 | 1 |
0.3%
|
|
| 40 | 30 |
9.8%
|
|
| 45 | 4 |
1.3%
|
|
| 50 | 40 |
13.1%
|
|
| 55 | 1 |
0.3%
|
|
| 59 | 1 |
0.3%
|
|
| 60 | 12 |
3.9%
|
|
| 65 | 1 |
0.3%
|
|
| 70 | 7 |
2.3%
|
|
| 75 | 1 |
0.3%
|
|
| 80 | 9 |
3%
|
|
| 85 | 1 |
0.3%
|
|
| 90 | 5 |
1.6%
|
|
| 100 | 2 |
0.7%
|
|
| Sysmiss | 509 |