| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 27 |
7.4%
|
| -8 | 2 |
0.6%
|
|
| -7 | Does not apply | 81 |
22.3%
|
| 1 | One day or less | 124 |
34.2%
|
| 2 | 46 |
12.7%
|
|
| 3 | 24 |
6.6%
|
|
| 4 | 4 |
1.1%
|
|
| 5 | 10 |
2.8%
|
|
| 7 | 10 |
2.8%
|
|
| 9 | 1 |
0.3%
|
|
| 10 | 5 |
1.4%
|
|
| 12 | 1 |
0.3%
|
|
| 14 | 2 |
0.6%
|
|
| 15 | 3 |
0.8%
|
|
| 20 | 1 |
0.3%
|
|
| 21 | 5 |
1.4%
|
|
| 30 | 12 |
3.3%
|
|
| 35 | 1 |
0.3%
|
|
| 40 | 2 |
0.6%
|
|
| 50 | 1 |
0.3%
|
|
| 100 | 1 |
0.3%
|
|
| Sysmiss | 592 |