| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | 154 |
77.4%
|
|
| 1 | 7 |
3.5%
|
|
| 2 | 5 |
2.5%
|
|
| 3 | 2 |
1%
|
|
| 5 | 6 |
3%
|
|
| 7 | 1 |
0.5%
|
|
| 8 | 1 |
0.5%
|
|
| 10 | 5 |
2.5%
|
|
| 15 | 3 |
1.5%
|
|
| 20 | 3 |
1.5%
|
|
| 30 | 2 |
1%
|
|
| 50 | 2 |
1%
|
|
| 60 | 1 |
0.5%
|
|
| 70 | 1 |
0.5%
|
|
| 80 | 1 |
0.5%
|
|
| 85 | 1 |
0.5%
|
|
| 100 | 4 |
2%
|
|
| Sysmiss | 159 |