| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
2.9%
|
| 1 | One hour or less | 4 |
5.9%
|
| 2 | 7 |
10.3%
|
|
| 3 | 5 |
7.4%
|
|
| 4 | 2 |
2.9%
|
|
| 5 | 3 |
4.4%
|
|
| 6 | 12 |
17.6%
|
|
| 7 | 5 |
7.4%
|
|
| 8 | 10 |
14.7%
|
|
| 10 | 5 |
7.4%
|
|
| 12 | 5 |
7.4%
|
|
| 15 | 1 |
1.5%
|
|
| 18 | 1 |
1.5%
|
|
| 20 | 1 |
1.5%
|
|
| 22 | 2 |
2.9%
|
|
| 24 | 2 |
2.9%
|
|
| 50 | 1 |
1.5%
|
|
| Sysmiss | 285 |