| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 10 |
5.8%
|
| 0 | 8 |
4.7%
|
|
| 1 | 19 |
11%
|
|
| 2 | 31 |
18%
|
|
| 3 | 12 |
7%
|
|
| 4 | 38 |
22.1%
|
|
| 5 | 4 |
2.3%
|
|
| 6 | 5 |
2.9%
|
|
| 7 | 2 |
1.2%
|
|
| 8 | 10 |
5.8%
|
|
| 9 | 1 |
0.6%
|
|
| 10 | 2 |
1.2%
|
|
| 12 | 12 |
7%
|
|
| 13 | 1 |
0.6%
|
|
| 16 | 3 |
1.7%
|
|
| 20 | 2 |
1.2%
|
|
| 24 | 8 |
4.7%
|
|
| 25 | 1 |
0.6%
|
|
| 40 | 1 |
0.6%
|
|
| 52 | 2 |
1.2%
|
|
| Sysmiss | 68 |