| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 17 |
11%
|
| 0 | 95 |
61.3%
|
|
| 1 | 3 |
1.9%
|
|
| 2 | 7 |
4.5%
|
|
| 3 | 4 |
2.6%
|
|
| 4 | 2 |
1.3%
|
|
| 5 | 7 |
4.5%
|
|
| 6 | 1 |
0.6%
|
|
| 8 | 2 |
1.3%
|
|
| 10 | 7 |
4.5%
|
|
| 20 | 3 |
1.9%
|
|
| 30 | 2 |
1.3%
|
|
| 40 | 2 |
1.3%
|
|
| 43 | 1 |
0.6%
|
|
| 45 | 1 |
0.6%
|
|
| 50 | 1 |
0.6%
|
|
| Sysmiss | 204 |