| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 28 |
27.2%
|
| 1 | 2 |
1.9%
|
|
| 2 | 2 |
1.9%
|
|
| 3 | 3 |
2.9%
|
|
| 4 | 22 |
21.4%
|
|
| 6 | 2 |
1.9%
|
|
| 8 | 23 |
22.3%
|
|
| 12 | 13 |
12.6%
|
|
| 16 | 1 |
1%
|
|
| 20 | 2 |
1.9%
|
|
| 25 | 1 |
1%
|
|
| 28 | 1 |
1%
|
|
| 34 | 1 |
1%
|
|
| 52 | 1 |
1%
|
|
| 260 | 1 |
1%
|
|
| Sysmiss | 47 |