| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 6 |
4.1%
|
| 2 | 2 |
1.4%
|
|
| 3 | 1 |
0.7%
|
|
| 5 | 8 |
5.5%
|
|
| 8 | 1 |
0.7%
|
|
| 10 | 16 |
11%
|
|
| 12 | 2 |
1.4%
|
|
| 15 | 13 |
9%
|
|
| 17 | 1 |
0.7%
|
|
| 20 | 21 |
14.5%
|
|
| 25 | 6 |
4.1%
|
|
| 30 | 28 |
19.3%
|
|
| 35 | 2 |
1.4%
|
|
| 37 | 1 |
0.7%
|
|
| 40 | 8 |
5.5%
|
|
| 45 | 1 |
0.7%
|
|
| 50 | 12 |
8.3%
|
|
| 60 | 4 |
2.8%
|
|
| 65 | 1 |
0.7%
|
|
| 70 | 4 |
2.8%
|
|
| 75 | 1 |
0.7%
|
|
| 80 | 4 |
2.8%
|
|
| 90 | 2 |
1.4%
|
|
| Sysmiss | 217 |