| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 189 |
29%
|
| 1 | One hour or less | 59 |
9.1%
|
| 2 | 9 |
1.4%
|
|
| 3 | 5 |
0.8%
|
|
| 4 | 2 |
0.3%
|
|
| 5 | 3 |
0.5%
|
|
| 6 | 8 |
1.2%
|
|
| 8 | 4 |
0.6%
|
|
| 9 | 1 |
0.2%
|
|
| 10 | 5 |
0.8%
|
|
| 12 | 1 |
0.2%
|
|
| 13 | 3 |
0.5%
|
|
| 15 | 2 |
0.3%
|
|
| 18 | 1 |
0.2%
|
|
| 20 | 1 |
0.2%
|
|
| 22 | 1 |
0.2%
|
|
| 24 | 11 |
1.7%
|
|
| 25 | 2 |
0.3%
|
|
| 30 | 43 |
6.6%
|
|
| 31 | 1 |
0.2%
|
|
| 32 | 3 |
0.5%
|
|
| 33 | 1 |
0.2%
|
|
| 35 | 2 |
0.3%
|
|
| 36 | 41 |
6.3%
|
|
| 38 | 3 |
0.5%
|
|
| 40 | 10 |
1.5%
|
|
| 42 | 6 |
0.9%
|
|
| 45 | 4 |
0.6%
|
|
| 48 | 43 |
6.6%
|
|
| 50 | 13 |
2%
|
|
| 54 | 1 |
0.2%
|
|
| 55 | 9 |
1.4%
|
|
| 60 | 35 |
5.4%
|
|
| 62 | 3 |
0.5%
|
|
| 64 | 2 |
0.3%
|
|
| 65 | 1 |
0.2%
|
|
| 66 | 2 |
0.3%
|
|
| 70 | 24 |
3.7%
|
|
| 72 | 21 |
3.2%
|
|
| 75 | 9 |
1.4%
|
|
| 80 | 27 |
4.1%
|
|
| 82 | 1 |
0.2%
|
|
| 85 | 1 |
0.2%
|
|
| 90 | 6 |
0.9%
|
|
| 92 | 4 |
0.6%
|
|
| 96 | 3 |
0.5%
|
|
| 98 | 1 |
0.2%
|
|
| 100 | 7 |
1.1%
|
|
| 120 | 8 |
1.2%
|
|
| 140 | 1 |
0.2%
|
|
| 144 | 2 |
0.3%
|
|
| 150 | 1 |
0.2%
|
|
| 168 | 1 |
0.2%
|
|
| 180 | 2 |
0.3%
|
|
| 250 | 1 |
0.2%
|
|
| 400 | 1 |
0.2%
|
|
| Sysmiss | 649 |