| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | Less than 1 hour | 16 |
24.6%
|
| 1 | 5 |
7.7%
|
|
| 2 | 7 |
10.8%
|
|
| 3 | 6 |
9.2%
|
|
| 4 | 6 |
9.2%
|
|
| 5 | 2 |
3.1%
|
|
| 6 | 6 |
9.2%
|
|
| 7 | 1 |
1.5%
|
|
| 10 | 1 |
1.5%
|
|
| 15 | 1 |
1.5%
|
|
| 20 | 1 |
1.5%
|
|
| 24 | 3 |
4.6%
|
|
| 48 | 3 |
4.6%
|
|
| 56 | 1 |
1.5%
|
|
| 60 | 2 |
3.1%
|
|
| 72 | 3 |
4.6%
|
|
| 100 | 1 |
1.5%
|
|
| Sysmiss | 108 |