| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | 9 |
5.3%
|
|
| 2 | 18 |
10.5%
|
|
| 3 | 9 |
5.3%
|
|
| 4 | 30 |
17.5%
|
|
| 5 | 5 |
2.9%
|
|
| 6 | 16 |
9.4%
|
|
| 7 | 3 |
1.8%
|
|
| 8 | 29 |
17%
|
|
| 9 | 1 |
0.6%
|
|
| 10 | 2 |
1.2%
|
|
| 11 | 3 |
1.8%
|
|
| 12 | 22 |
12.9%
|
|
| 13 | 2 |
1.2%
|
|
| 14 | 4 |
2.3%
|
|
| 15 | 3 |
1.8%
|
|
| 16 | 4 |
2.3%
|
|
| 18 | 3 |
1.8%
|
|
| 20 | 1 |
0.6%
|
|
| 22 | 1 |
0.6%
|
|
| 24 | 1 |
0.6%
|
|
| 30 | 3 |
1.8%
|
|
| 90 | 2 |
1.2%
|
|
| Sysmiss | 430 |