| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 37 |
50.7%
|
| 1 | One hour or less | 3 |
4.1%
|
| 2 | 1 |
1.4%
|
|
| 3 | 1 |
1.4%
|
|
| 24 | 2 |
2.7%
|
|
| 28 | 1 |
1.4%
|
|
| 30 | 4 |
5.5%
|
|
| 31 | 1 |
1.4%
|
|
| 36 | 2 |
2.7%
|
|
| 48 | 4 |
5.5%
|
|
| 72 | 5 |
6.8%
|
|
| 84 | 1 |
1.4%
|
|
| 90 | 1 |
1.4%
|
|
| 96 | 2 |
2.7%
|
|
| 120 | 2 |
2.7%
|
|
| 144 | 2 |
2.7%
|
|
| 200 | 1 |
1.4%
|
|
| 360 | 1 |
1.4%
|
|
| 480 | 1 |
1.4%
|
|
| 1100 | 1 |
1.4%
|
|
| Sysmiss | 77 |