| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 |
3%
|
| 1 | One hour or less | 30 |
18.2%
|
| 2 | 16 |
9.7%
|
|
| 3 | 18 |
10.9%
|
|
| 4 | 6 |
3.6%
|
|
| 5 | 14 |
8.5%
|
|
| 6 | 9 |
5.5%
|
|
| 7 | 2 |
1.2%
|
|
| 8 | 4 |
2.4%
|
|
| 10 | 3 |
1.8%
|
|
| 12 | 6 |
3.6%
|
|
| 14 | 2 |
1.2%
|
|
| 16 | 1 |
0.6%
|
|
| 20 | 1 |
0.6%
|
|
| 24 | 22 |
13.3%
|
|
| 26 | 2 |
1.2%
|
|
| 30 | 1 |
0.6%
|
|
| 36 | 2 |
1.2%
|
|
| 48 | 5 |
3%
|
|
| 60 | 1 |
0.6%
|
|
| 72 | 12 |
7.3%
|
|
| 96 | 3 |
1.8%
|
|
| Sysmiss | 548 |