| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | 49 |
28.3%
|
|
| 1 | 36 |
20.8%
|
|
| 2 | 28 |
16.2%
|
|
| 3 | 21 |
12.1%
|
|
| 4 | 8 |
4.6%
|
|
| 5 | 8 |
4.6%
|
|
| 6 | 3 |
1.7%
|
|
| 7 | 4 |
2.3%
|
|
| 8 | 3 |
1.7%
|
|
| 9 | 3 |
1.7%
|
|
| 10 | 2 |
1.2%
|
|
| 11 | 1 |
0.6%
|
|
| 12 | 1 |
0.6%
|
|
| 18 | 1 |
0.6%
|
|
| 19 | 1 |
0.6%
|
|
| 20 | 3 |
1.7%
|
|
| 22 | 1 |
0.6%
|
|
| Sysmiss | 923 |