| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 15 |
1.9%
|
| 0 | 571 |
70.8%
|
|
| 1 | 45 |
5.6%
|
|
| 2 | 13 |
1.6%
|
|
| 3 | 4 |
0.5%
|
|
| 4 | 1 |
0.1%
|
|
| 5 | 20 |
2.5%
|
|
| 6 | 1 |
0.1%
|
|
| 7 | 2 |
0.2%
|
|
| 10 | 32 |
4%
|
|
| 12 | 1 |
0.1%
|
|
| 15 | 4 |
0.5%
|
|
| 17 | 1 |
0.1%
|
|
| 20 | 19 |
2.4%
|
|
| 25 | 3 |
0.4%
|
|
| 30 | 9 |
1.1%
|
|
| 35 | 1 |
0.1%
|
|
| 40 | 6 |
0.7%
|
|
| 50 | 24 |
3%
|
|
| 60 | 3 |
0.4%
|
|
| 64 | 1 |
0.1%
|
|
| 70 | 2 |
0.2%
|
|
| 80 | 9 |
1.1%
|
|
| 90 | 3 |
0.4%
|
|
| 95 | 1 |
0.1%
|
|
| 100 | 15 |
1.9%
|
|
| Sysmiss | 640 |