| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | 8 |
20%
|
|
| 2 | 1 |
2.5%
|
|
| 3 | 3 |
7.5%
|
|
| 4 | 3 |
7.5%
|
|
| 5 | 2 |
5%
|
|
| 6 | 1 |
2.5%
|
|
| 8 | 3 |
7.5%
|
|
| 9 | 2 |
5%
|
|
| 11 | 1 |
2.5%
|
|
| 12 | 3 |
7.5%
|
|
| 20 | 1 |
2.5%
|
|
| 30 | 3 |
7.5%
|
|
| 39 | 1 |
2.5%
|
|
| 45 | 1 |
2.5%
|
|
| 50 | 1 |
2.5%
|
|
| 57 | 1 |
2.5%
|
|
| 62 | 1 |
2.5%
|
|
| 69 | 1 |
2.5%
|
|
| 120 | 1 |
2.5%
|
|
| 233 | 1 |
2.5%
|
|
| 300 | 1 |
2.5%
|
|
| Sysmiss | 305 |