| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 16 |
8.8%
|
| 0 | Less than one day | 2 |
1.1%
|
| 1 | 6 |
3.3%
|
|
| 2 | 21 |
11.5%
|
|
| 3 | 32 |
17.6%
|
|
| 4 | 26 |
14.3%
|
|
| 5 | 15 |
8.2%
|
|
| 6 | 8 |
4.4%
|
|
| 7 | 18 |
9.9%
|
|
| 8 | 4 |
2.2%
|
|
| 9 | 1 |
0.5%
|
|
| 10 | 8 |
4.4%
|
|
| 11 | 2 |
1.1%
|
|
| 12 | 5 |
2.7%
|
|
| 14 | 15 |
8.2%
|
|
| 16 | 1 |
0.5%
|
|
| 24 | 1 |
0.5%
|
|
| 30 | 1 |
0.5%
|
|
| Sysmiss | 463 |