| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.5%
|
| -7 | Does not apply (spontaneous) | 27 |
14.6%
|
| 0 | Less than one day | 35 |
18.9%
|
| 1 | 12 |
6.5%
|
|
| 2 | 41 |
22.2%
|
|
| 3 | 15 |
8.1%
|
|
| 4 | 9 |
4.9%
|
|
| 5 | 12 |
6.5%
|
|
| 6 | 2 |
1.1%
|
|
| 7 | 13 |
7%
|
|
| 9 | 1 |
0.5%
|
|
| 10 | 7 |
3.8%
|
|
| 12 | 1 |
0.5%
|
|
| 13 | 2 |
1.1%
|
|
| 15 | 1 |
0.5%
|
|
| 18 | 2 |
1.1%
|
|
| 20 | 2 |
1.1%
|
|
| 45 | 1 |
0.5%
|
|
| 60 | 1 |
0.5%
|
|
| Sysmiss | 415 |