| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | 1 |
0.5%
|
|
| 1 | 19 |
9.8%
|
|
| 2 | 32 |
16.6%
|
|
| 3 | 23 |
11.9%
|
|
| 4 | 45 |
23.3%
|
|
| 8 | 35 |
18.1%
|
|
| 12 | 19 |
9.8%
|
|
| 14 | 1 |
0.5%
|
|
| 16 | 4 |
2.1%
|
|
| 20 | 1 |
0.5%
|
|
| 24 | 9 |
4.7%
|
|
| 48 | 3 |
1.6%
|
|
| 52 | 1 |
0.5%
|
|
| Sysmiss | 49 |