| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 63 |
32%
|
| 1 | One hour or less | 8 |
4.1%
|
| 2 | 6 |
3%
|
|
| 3 | 6 |
3%
|
|
| 4 | 7 |
3.6%
|
|
| 5 | 12 |
6.1%
|
|
| 6 | 3 |
1.5%
|
|
| 7 | 2 |
1%
|
|
| 8 | 8 |
4.1%
|
|
| 10 | 6 |
3%
|
|
| 12 | 1 |
0.5%
|
|
| 15 | 2 |
1%
|
|
| 16 | 3 |
1.5%
|
|
| 20 | 7 |
3.6%
|
|
| 24 | 2 |
1%
|
|
| 25 | 1 |
0.5%
|
|
| 30 | 7 |
3.6%
|
|
| 32 | 2 |
1%
|
|
| 35 | 1 |
0.5%
|
|
| 40 | 7 |
3.6%
|
|
| 45 | 1 |
0.5%
|
|
| 50 | 3 |
1.5%
|
|
| 64 | 1 |
0.5%
|
|
| 65 | 1 |
0.5%
|
|
| 80 | 3 |
1.5%
|
|
| 95 | 1 |
0.5%
|
|
| 96 | 1 |
0.5%
|
|
| 100 | 1 |
0.5%
|
|
| 120 | 3 |
1.5%
|
|
| 125 | 5 |
2.5%
|
|
| 155 | 1 |
0.5%
|
|
| 160 | 2 |
1%
|
|
| 176 | 1 |
0.5%
|
|
| 180 | 2 |
1%
|
|
| 185 | 2 |
1%
|
|
| 190 | 1 |
0.5%
|
|
| 200 | 2 |
1%
|
|
| 205 | 1 |
0.5%
|
|
| 220 | 2 |
1%
|
|
| 230 | 1 |
0.5%
|
|
| 240 | 1 |
0.5%
|
|
| 300 | 1 |
0.5%
|
|
| 320 | 1 |
0.5%
|
|
| 744 | 5 |
2.5%
|
|
| Sysmiss | 157 |