| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 17 |
10.2%
|
| 1 | 24 |
14.4%
|
|
| 2 | 20 |
12%
|
|
| 3 | 13 |
7.8%
|
|
| 4 | 35 |
21%
|
|
| 6 | 3 |
1.8%
|
|
| 8 | 15 |
9%
|
|
| 9 | 1 |
0.6%
|
|
| 10 | 1 |
0.6%
|
|
| 12 | 15 |
9%
|
|
| 16 | 2 |
1.2%
|
|
| 20 | 1 |
0.6%
|
|
| 24 | 11 |
6.6%
|
|
| 28 | 2 |
1.2%
|
|
| 48 | 1 |
0.6%
|
|
| 52 | 3 |
1.8%
|
|
| 100 | 1 |
0.6%
|
|
| 156 | 2 |
1.2%
|
|
| Sysmiss | 73 |