| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 113 |
60.1%
|
| 1 | One hour or less | 4 |
2.1%
|
| 2 | 2 |
1.1%
|
|
| 5 | 2 |
1.1%
|
|
| 10 | 4 |
2.1%
|
|
| 12 | 3 |
1.6%
|
|
| 15 | 1 |
0.5%
|
|
| 20 | 7 |
3.7%
|
|
| 24 | 1 |
0.5%
|
|
| 30 | 8 |
4.3%
|
|
| 32 | 1 |
0.5%
|
|
| 35 | 1 |
0.5%
|
|
| 36 | 3 |
1.6%
|
|
| 40 | 4 |
2.1%
|
|
| 50 | 7 |
3.7%
|
|
| 52 | 1 |
0.5%
|
|
| 60 | 1 |
0.5%
|
|
| 75 | 1 |
0.5%
|
|
| 80 | 4 |
2.1%
|
|
| 100 | 7 |
3.7%
|
|
| 120 | 1 |
0.5%
|
|
| 130 | 1 |
0.5%
|
|
| 150 | 1 |
0.5%
|
|
| 200 | 4 |
2.1%
|
|
| 240 | 1 |
0.5%
|
|
| 250 | 1 |
0.5%
|
|
| 300 | 1 |
0.5%
|
|
| 400 | 2 |
1.1%
|
|
| 1000 | 1 |
0.5%
|
|
| Sysmiss | 170 |