| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 51 |
11.7%
|
| 1 | One hour or less | 0 |
0%
|
| 4 | 1 |
0.2%
|
|
| 5 | 49 |
11.2%
|
|
| 6 | 79 |
18.1%
|
|
| 7 | 24 |
5.5%
|
|
| 8 | 77 |
17.7%
|
|
| 9 | 4 |
0.9%
|
|
| 10 | 35 |
8%
|
|
| 12 | 22 |
5%
|
|
| 14 | 14 |
3.2%
|
|
| 15 | 18 |
4.1%
|
|
| 16 | 7 |
1.6%
|
|
| 20 | 13 |
3%
|
|
| 24 | 7 |
1.6%
|
|
| 25 | 2 |
0.5%
|
|
| 26 | 4 |
0.9%
|
|
| 28 | 2 |
0.5%
|
|
| 30 | 5 |
1.1%
|
|
| 32 | 1 |
0.2%
|
|
| 40 | 1 |
0.2%
|
|
| 42 | 1 |
0.2%
|
|
| 44 | 1 |
0.2%
|
|
| 48 | 3 |
0.7%
|
|
| 50 | 1 |
0.2%
|
|
| 54 | 2 |
0.5%
|
|
| 56 | 2 |
0.5%
|
|
| 60 | 2 |
0.5%
|
|
| 65 | 1 |
0.2%
|
|
| 72 | 3 |
0.7%
|
|
| 78 | 1 |
0.2%
|
|
| 80 | 2 |
0.5%
|
|
| 120 | 1 |
0.2%
|
|
| Sysmiss | 562 |