| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 2 |
0.9%
|
| 0 | 190 |
81.2%
|
|
| 2 | 1 |
0.4%
|
|
| 3 | 3 |
1.3%
|
|
| 4 | 2 |
0.9%
|
|
| 5 | 2 |
0.9%
|
|
| 7 | 1 |
0.4%
|
|
| 8 | 3 |
1.3%
|
|
| 9 | 1 |
0.4%
|
|
| 10 | 1 |
0.4%
|
|
| 11 | 2 |
0.9%
|
|
| 12 | 3 |
1.3%
|
|
| 13 | 1 |
0.4%
|
|
| 14 | 1 |
0.4%
|
|
| 15 | 2 |
0.9%
|
|
| 18 | 1 |
0.4%
|
|
| 20 | 6 |
2.6%
|
|
| 40 | 1 |
0.4%
|
|
| 50 | 3 |
1.3%
|
|
| 60 | 1 |
0.4%
|
|
| 70 | 1 |
0.4%
|
|
| 100 | 2 |
0.9%
|
|
| 120 | 1 |
0.4%
|
|
| 150 | 2 |
0.9%
|
|
| 550 | 1 |
0.4%
|
|
| Sysmiss | 128 |