| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 8 |
6.3%
|
| -7 | Does not apply (spontaneous) | 0 |
0%
|
| 0 | Less than one day | 2 |
1.6%
|
| 2 | 3 |
2.3%
|
|
| 3 | 1 |
0.8%
|
|
| 5 | 5 |
3.9%
|
|
| 7 | 15 |
11.7%
|
|
| 9 | 1 |
0.8%
|
|
| 10 | 5 |
3.9%
|
|
| 13 | 2 |
1.6%
|
|
| 14 | 12 |
9.4%
|
|
| 15 | 12 |
9.4%
|
|
| 19 | 1 |
0.8%
|
|
| 20 | 13 |
10.2%
|
|
| 21 | 1 |
0.8%
|
|
| 25 | 4 |
3.1%
|
|
| 30 | 31 |
24.2%
|
|
| 31 | 1 |
0.8%
|
|
| 40 | 1 |
0.8%
|
|
| 45 | 1 |
0.8%
|
|
| 60 | 5 |
3.9%
|
|
| 90 | 3 |
2.3%
|
|
| 120 | 1 |
0.8%
|
|
| Sysmiss | 896 |