| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 10 |
6.5%
|
| 0 | Less than one day | 11 |
7.2%
|
| 1 | 10 |
6.5%
|
|
| 2 | 21 |
13.7%
|
|
| 3 | 21 |
13.7%
|
|
| 4 | 7 |
4.6%
|
|
| 5 | 22 |
14.4%
|
|
| 6 | 3 |
2%
|
|
| 7 | 10 |
6.5%
|
|
| 8 | 2 |
1.3%
|
|
| 10 | 3 |
2%
|
|
| 11 | 2 |
1.3%
|
|
| 14 | 3 |
2%
|
|
| 15 | 7 |
4.6%
|
|
| 16 | 3 |
2%
|
|
| 20 | 3 |
2%
|
|
| 30 | 5 |
3.3%
|
|
| 35 | 2 |
1.3%
|
|
| 36 | 1 |
0.7%
|
|
| 40 | 1 |
0.7%
|
|
| 45 | 1 |
0.7%
|
|
| 50 | 2 |
1.3%
|
|
| 53 | 1 |
0.7%
|
|
| 60 | 1 |
0.7%
|
|
| 62 | 1 |
0.7%
|
|
| Sysmiss | 854 |