| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 2 |
0.9%
|
| -9 | Don't know (spontaneous) | 22 |
9.4%
|
| 0 | 22 |
9.4%
|
|
| 2 | 2 |
0.9%
|
|
| 3 | 6 |
2.6%
|
|
| 4 | 8 |
3.4%
|
|
| 5 | 16 |
6.9%
|
|
| 6 | 3 |
1.3%
|
|
| 7 | 1 |
0.4%
|
|
| 8 | 9 |
3.9%
|
|
| 9 | 2 |
0.9%
|
|
| 10 | 23 |
9.9%
|
|
| 11 | 2 |
0.9%
|
|
| 12 | 1 |
0.4%
|
|
| 13 | 2 |
0.9%
|
|
| 14 | 1 |
0.4%
|
|
| 15 | 14 |
6%
|
|
| 16 | 1 |
0.4%
|
|
| 18 | 4 |
1.7%
|
|
| 20 | 15 |
6.4%
|
|
| 24 | 2 |
0.9%
|
|
| 25 | 10 |
4.3%
|
|
| 27 | 1 |
0.4%
|
|
| 30 | 22 |
9.4%
|
|
| 35 | 1 |
0.4%
|
|
| 40 | 7 |
3%
|
|
| 45 | 3 |
1.3%
|
|
| 50 | 9 |
3.9%
|
|
| 55 | 4 |
1.7%
|
|
| 60 | 2 |
0.9%
|
|
| 65 | 1 |
0.4%
|
|
| 70 | 1 |
0.4%
|
|
| 75 | 1 |
0.4%
|
|
| 80 | 1 |
0.4%
|
|
| 90 | 2 |
0.9%
|
|
| 100 | 4 |
1.7%
|
|
| 120 | 1 |
0.4%
|
|
| 150 | 1 |
0.4%
|
|
| 160 | 1 |
0.4%
|
|
| 250 | 1 |
0.4%
|
|
| 350 | 1 |
0.4%
|
|
| 800 | 1 |
0.4%
|
|
| Sysmiss | 127 |