| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 18 |
28.6%
|
| 1 | One hour or less | 8 |
12.7%
|
| 2 | 8 |
12.7%
|
|
| 3 | 8 |
12.7%
|
|
| 4 | 4 |
6.3%
|
|
| 5 | 3 |
4.8%
|
|
| 8 | 3 |
4.8%
|
|
| 10 | 1 |
1.6%
|
|
| 12 | 2 |
3.2%
|
|
| 16 | 2 |
3.2%
|
|
| 20 | 1 |
1.6%
|
|
| 23 | 1 |
1.6%
|
|
| 24 | 1 |
1.6%
|
|
| 30 | 1 |
1.6%
|
|
| 48 | 1 |
1.6%
|
|
| 300 | 1 |
1.6%
|
|
| Sysmiss | 48 |