| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 3 |
10%
|
| 2 | 4 |
13.3%
|
|
| 4 | 2 |
6.7%
|
|
| 5 | 4 |
13.3%
|
|
| 6 | 1 |
3.3%
|
|
| 7 | 1 |
3.3%
|
|
| 8 | 1 |
3.3%
|
|
| 12 | 1 |
3.3%
|
|
| 15 | 1 |
3.3%
|
|
| 20 | 1 |
3.3%
|
|
| 21 | 1 |
3.3%
|
|
| 52 | 1 |
3.3%
|
|
| 140 | 1 |
3.3%
|
|
| 162 | 1 |
3.3%
|
|
| 200 | 3 |
10%
|
|
| 500 | 1 |
3.3%
|
|
| 1200 | 2 |
6.7%
|
|
| 2000 | 1 |
3.3%
|
|
| Sysmiss | 358 |