| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 6 |
9.1%
|
| 2 | 1 |
1.5%
|
|
| 3 | 3 |
4.5%
|
|
| 4 | 2 |
3%
|
|
| 5 | 2 |
3%
|
|
| 7 | 1 |
1.5%
|
|
| 8 | 2 |
3%
|
|
| 10 | 3 |
4.5%
|
|
| 15 | 9 |
13.6%
|
|
| 20 | 2 |
3%
|
|
| 22 | 5 |
7.6%
|
|
| 24 | 1 |
1.5%
|
|
| 30 | 9 |
13.6%
|
|
| 45 | 4 |
6.1%
|
|
| 60 | 7 |
10.6%
|
|
| 65 | 1 |
1.5%
|
|
| 90 | 2 |
3%
|
|
| 120 | 1 |
1.5%
|
|
| 180 | 2 |
3%
|
|
| 240 | 1 |
1.5%
|
|
| 365 | 1 |
1.5%
|
|
| 600 | 1 |
1.5%
|
|
| Sysmiss | 291 |