| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 1 |
1.3%
|
| 0 | 41 |
51.9%
|
|
| 1 | 7 |
8.9%
|
|
| 2 | 11 |
13.9%
|
|
| 3 | 4 |
5.1%
|
|
| 4 | 1 |
1.3%
|
|
| 5 | 2 |
2.5%
|
|
| 6 | 1 |
1.3%
|
|
| 7 | 1 |
1.3%
|
|
| 10 | 2 |
2.5%
|
|
| 12 | 1 |
1.3%
|
|
| 15 | 1 |
1.3%
|
|
| 20 | 1 |
1.3%
|
|
| 25 | 2 |
2.5%
|
|
| 36 | 1 |
1.3%
|
|
| 54 | 1 |
1.3%
|
|
| 200 | 1 |
1.3%
|
|
| Sysmiss | 726 |