| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 13 |
2.2%
|
| 0 | 485 |
81.2%
|
|
| 1 | 6 |
1%
|
|
| 3 | 4 |
0.7%
|
|
| 5 | 13 |
2.2%
|
|
| 10 | 16 |
2.7%
|
|
| 15 | 6 |
1%
|
|
| 20 | 9 |
1.5%
|
|
| 30 | 4 |
0.7%
|
|
| 33 | 1 |
0.2%
|
|
| 40 | 3 |
0.5%
|
|
| 50 | 10 |
1.7%
|
|
| 60 | 1 |
0.2%
|
|
| 70 | 6 |
1%
|
|
| 75 | 1 |
0.2%
|
|
| 80 | 4 |
0.7%
|
|
| 90 | 1 |
0.2%
|
|
| 95 | 1 |
0.2%
|
|
| 98 | 1 |
0.2%
|
|
| 100 | 12 |
2%
|
|
| Sysmiss | 104 |