| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 1 |
0.3%
|
| -9 | Don't know (spontaneous) | 25 |
8.4%
|
| 0 | 45 |
15.2%
|
|
| 1 | 46 |
15.5%
|
|
| 2 | 30 |
10.1%
|
|
| 3 | 28 |
9.4%
|
|
| 4 | 18 |
6.1%
|
|
| 5 | 20 |
6.7%
|
|
| 6 | 7 |
2.4%
|
|
| 7 | 6 |
2%
|
|
| 8 | 8 |
2.7%
|
|
| 9 | 3 |
1%
|
|
| 10 | 8 |
2.7%
|
|
| 11 | 2 |
0.7%
|
|
| 12 | 5 |
1.7%
|
|
| 13 | 1 |
0.3%
|
|
| 14 | 2 |
0.7%
|
|
| 15 | 2 |
0.7%
|
|
| 17 | 2 |
0.7%
|
|
| 18 | 2 |
0.7%
|
|
| 20 | 9 |
3%
|
|
| 25 | 3 |
1%
|
|
| 26 | 1 |
0.3%
|
|
| 30 | 4 |
1.3%
|
|
| 40 | 2 |
0.7%
|
|
| 50 | 1 |
0.3%
|
|
| 60 | 2 |
0.7%
|
|
| 65 | 1 |
0.3%
|
|
| 80 | 1 |
0.3%
|
|
| 85 | 1 |
0.3%
|
|
| 90 | 1 |
0.3%
|
|
| 100 | 2 |
0.7%
|
|
| 114 | 1 |
0.3%
|
|
| 135 | 1 |
0.3%
|
|
| 170 | 1 |
0.3%
|
|
| 190 | 1 |
0.3%
|
|
| 200 | 1 |
0.3%
|
|
| 250 | 1 |
0.3%
|
|
| 280 | 1 |
0.3%
|
|
| 460 | 1 |
0.3%
|
|
| Sysmiss | 463 |