| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 2 |
1.2%
|
| 0 | 130 |
75.6%
|
|
| 1 | 2 |
1.2%
|
|
| 2 | 3 |
1.7%
|
|
| 3 | 2 |
1.2%
|
|
| 4 | 3 |
1.7%
|
|
| 5 | 8 |
4.7%
|
|
| 6 | 1 |
0.6%
|
|
| 7 | 1 |
0.6%
|
|
| 10 | 7 |
4.1%
|
|
| 15 | 4 |
2.3%
|
|
| 20 | 1 |
0.6%
|
|
| 30 | 3 |
1.7%
|
|
| 33 | 1 |
0.6%
|
|
| 40 | 1 |
0.6%
|
|
| 45 | 1 |
0.6%
|
|
| 80 | 1 |
0.6%
|
|
| 90 | 1 |
0.6%
|
|
| Sysmiss | 68 |