| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 699 |
45.1%
|
| 1 | One hour or less | 445 |
28.7%
|
| 2 | 35 |
2.3%
|
|
| 3 | 22 |
1.4%
|
|
| 4 | 20 |
1.3%
|
|
| 5 | 18 |
1.2%
|
|
| 6 | 8 |
0.5%
|
|
| 7 | 1 |
0.1%
|
|
| 8 | 8 |
0.5%
|
|
| 9 | 1 |
0.1%
|
|
| 10 | 14 |
0.9%
|
|
| 11 | 1 |
0.1%
|
|
| 12 | 22 |
1.4%
|
|
| 14 | 3 |
0.2%
|
|
| 15 | 3 |
0.2%
|
|
| 16 | 1 |
0.1%
|
|
| 18 | 39 |
2.5%
|
|
| 20 | 8 |
0.5%
|
|
| 21 | 1 |
0.1%
|
|
| 24 | 82 |
5.3%
|
|
| 25 | 2 |
0.1%
|
|
| 28 | 1 |
0.1%
|
|
| 30 | 5 |
0.3%
|
|
| 36 | 32 |
2.1%
|
|
| 40 | 6 |
0.4%
|
|
| 42 | 3 |
0.2%
|
|
| 46 | 1 |
0.1%
|
|
| 48 | 27 |
1.7%
|
|
| 52 | 2 |
0.1%
|
|
| 54 | 1 |
0.1%
|
|
| 56 | 3 |
0.2%
|
|
| 58 | 1 |
0.1%
|
|
| 60 | 5 |
0.3%
|
|
| 70 | 1 |
0.1%
|
|
| 72 | 6 |
0.4%
|
|
| 80 | 1 |
0.1%
|
|
| 90 | 1 |
0.1%
|
|
| 96 | 1 |
0.1%
|
|
| 100 | 2 |
0.1%
|
|
| 105 | 1 |
0.1%
|
|
| 120 | 3 |
0.2%
|
|
| 140 | 1 |
0.1%
|
|
| 144 | 1 |
0.1%
|
|
| 148 | 1 |
0.1%
|
|
| 150 | 2 |
0.1%
|
|
| 168 | 6 |
0.4%
|
|
| 240 | 1 |
0.1%
|
|
| 300 | 1 |
0.1%
|
|
| 672 | 1 |
0.1%
|
|
| Sysmiss | 1405 |