| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
1.4%
|
| 1 | One hour or less | 7 |
10.1%
|
| 2 | 8 |
11.6%
|
|
| 3 | 9 |
13%
|
|
| 4 | 2 |
2.9%
|
|
| 5 | 4 |
5.8%
|
|
| 6 | 7 |
10.1%
|
|
| 7 | 2 |
2.9%
|
|
| 8 | 4 |
5.8%
|
|
| 9 | 2 |
2.9%
|
|
| 10 | 2 |
2.9%
|
|
| 12 | 11 |
15.9%
|
|
| 13 | 1 |
1.4%
|
|
| 15 | 1 |
1.4%
|
|
| 18 | 1 |
1.4%
|
|
| 24 | 3 |
4.3%
|
|
| 32 | 1 |
1.4%
|
|
| 48 | 1 |
1.4%
|
|
| 72 | 1 |
1.4%
|
|
| 78 | 1 |
1.4%
|
|
| Sysmiss | 333 |