| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 2 |
1%
|
| -9 | Don't know (spontaneous) | 21 |
10.5%
|
| 2 | 2 |
1%
|
|
| 3 | 9 |
4.5%
|
|
| 4 | 9 |
4.5%
|
|
| 5 | 15 |
7.5%
|
|
| 6 | 3 |
1.5%
|
|
| 7 | 2 |
1%
|
|
| 8 | 13 |
6.5%
|
|
| 9 | 4 |
2%
|
|
| 10 | 26 |
13%
|
|
| 11 | 2 |
1%
|
|
| 12 | 3 |
1.5%
|
|
| 13 | 1 |
0.5%
|
|
| 14 | 1 |
0.5%
|
|
| 15 | 13 |
6.5%
|
|
| 18 | 3 |
1.5%
|
|
| 20 | 14 |
7%
|
|
| 24 | 1 |
0.5%
|
|
| 25 | 12 |
6%
|
|
| 27 | 2 |
1%
|
|
| 30 | 13 |
6.5%
|
|
| 32 | 1 |
0.5%
|
|
| 35 | 1 |
0.5%
|
|
| 38 | 1 |
0.5%
|
|
| 40 | 5 |
2.5%
|
|
| 45 | 1 |
0.5%
|
|
| 50 | 5 |
2.5%
|
|
| 55 | 3 |
1.5%
|
|
| 60 | 1 |
0.5%
|
|
| 75 | 1 |
0.5%
|
|
| 80 | 1 |
0.5%
|
|
| 90 | 2 |
1%
|
|
| 100 | 4 |
2%
|
|
| 200 | 1 |
0.5%
|
|
| 350 | 1 |
0.5%
|
|
| 800 | 1 |
0.5%
|
|
| Sysmiss | 160 |