| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 77 |
44.5%
|
| 1 | One hour or less | 0 |
0%
|
| 10 | 9 |
5.2%
|
|
| 12 | 3 |
1.7%
|
|
| 16 | 1 |
0.6%
|
|
| 24 | 7 |
4%
|
|
| 25 | 1 |
0.6%
|
|
| 30 | 10 |
5.8%
|
|
| 32 | 3 |
1.7%
|
|
| 36 | 2 |
1.2%
|
|
| 39 | 1 |
0.6%
|
|
| 40 | 8 |
4.6%
|
|
| 48 | 2 |
1.2%
|
|
| 50 | 3 |
1.7%
|
|
| 60 | 3 |
1.7%
|
|
| 72 | 1 |
0.6%
|
|
| 80 | 2 |
1.2%
|
|
| 96 | 2 |
1.2%
|
|
| 100 | 3 |
1.7%
|
|
| 120 | 3 |
1.7%
|
|
| 130 | 1 |
0.6%
|
|
| 144 | 1 |
0.6%
|
|
| 150 | 2 |
1.2%
|
|
| 180 | 2 |
1.2%
|
|
| 192 | 1 |
0.6%
|
|
| 200 | 1 |
0.6%
|
|
| 240 | 1 |
0.6%
|
|
| 250 | 1 |
0.6%
|
|
| 300 | 3 |
1.7%
|
|
| 400 | 2 |
1.2%
|
|
| 480 | 1 |
0.6%
|
|
| 500 | 2 |
1.2%
|
|
| 550 | 1 |
0.6%
|
|
| 600 | 1 |
0.6%
|
|
| 650 | 1 |
0.6%
|
|
| 700 | 1 |
0.6%
|
|
| 760 | 1 |
0.6%
|
|
| 900 | 2 |
1.2%
|
|
| 1000 | 4 |
2.3%
|
|
| 1500 | 2 |
1.2%
|
|
| 1720 | 1 |
0.6%
|
|
| Sysmiss | 178 |