| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 60 |
41.4%
|
| 1 | One hour or less | 13 |
9%
|
| 2 | 16 |
11%
|
|
| 3 | 16 |
11%
|
|
| 4 | 2 |
1.4%
|
|
| 5 | 2 |
1.4%
|
|
| 6 | 1 |
0.7%
|
|
| 8 | 2 |
1.4%
|
|
| 12 | 1 |
0.7%
|
|
| 13 | 1 |
0.7%
|
|
| 20 | 3 |
2.1%
|
|
| 24 | 6 |
4.1%
|
|
| 25 | 1 |
0.7%
|
|
| 30 | 2 |
1.4%
|
|
| 32 | 1 |
0.7%
|
|
| 40 | 3 |
2.1%
|
|
| 48 | 2 |
1.4%
|
|
| 50 | 1 |
0.7%
|
|
| 60 | 1 |
0.7%
|
|
| 72 | 1 |
0.7%
|
|
| 80 | 2 |
1.4%
|
|
| 96 | 1 |
0.7%
|
|
| 104 | 1 |
0.7%
|
|
| 108 | 1 |
0.7%
|
|
| 120 | 1 |
0.7%
|
|
| 200 | 2 |
1.4%
|
|
| 480 | 1 |
0.7%
|
|
| 500 | 1 |
0.7%
|