| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | Less than one day | 7 |
10.3%
|
| 3 | 1 |
1.5%
|
|
| 4 | 4 |
5.9%
|
|
| 5 | 5 |
7.4%
|
|
| 6 | 2 |
2.9%
|
|
| 7 | 4 |
5.9%
|
|
| 8 | 1 |
1.5%
|
|
| 10 | 1 |
1.5%
|
|
| 12 | 1 |
1.5%
|
|
| 13 | 1 |
1.5%
|
|
| 14 | 2 |
2.9%
|
|
| 15 | 2 |
2.9%
|
|
| 16 | 2 |
2.9%
|
|
| 17 | 1 |
1.5%
|
|
| 20 | 2 |
2.9%
|
|
| 24 | 2 |
2.9%
|
|
| 28 | 1 |
1.5%
|
|
| 30 | 6 |
8.8%
|
|
| 37 | 1 |
1.5%
|
|
| 40 | 2 |
2.9%
|
|
| 45 | 6 |
8.8%
|
|
| 50 | 4 |
5.9%
|
|
| 60 | 3 |
4.4%
|
|
| 70 | 2 |
2.9%
|
|
| 75 | 1 |
1.5%
|
|
| 78 | 1 |
1.5%
|
|
| 80 | 1 |
1.5%
|
|
| 168 | 1 |
1.5%
|
|
| 336 | 1 |
1.5%
|
|
| Sysmiss | 297 |