| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 120 |
32.2%
|
| 1 | One hour or less | 17 |
4.6%
|
| 2 | 2 |
0.5%
|
|
| 3 | 8 |
2.1%
|
|
| 4 | 4 |
1.1%
|
|
| 5 | 5 |
1.3%
|
|
| 6 | 1 |
0.3%
|
|
| 7 | 1 |
0.3%
|
|
| 8 | 9 |
2.4%
|
|
| 9 | 1 |
0.3%
|
|
| 10 | 12 |
3.2%
|
|
| 12 | 17 |
4.6%
|
|
| 13 | 1 |
0.3%
|
|
| 15 | 9 |
2.4%
|
|
| 16 | 7 |
1.9%
|
|
| 20 | 25 |
6.7%
|
|
| 23 | 1 |
0.3%
|
|
| 24 | 9 |
2.4%
|
|
| 25 | 4 |
1.1%
|
|
| 30 | 16 |
4.3%
|
|
| 32 | 4 |
1.1%
|
|
| 35 | 7 |
1.9%
|
|
| 36 | 1 |
0.3%
|
|
| 38 | 1 |
0.3%
|
|
| 40 | 9 |
2.4%
|
|
| 42 | 1 |
0.3%
|
|
| 44 | 4 |
1.1%
|
|
| 45 | 1 |
0.3%
|
|
| 46 | 1 |
0.3%
|
|
| 48 | 25 |
6.7%
|
|
| 50 | 4 |
1.1%
|
|
| 55 | 1 |
0.3%
|
|
| 60 | 4 |
1.1%
|
|
| 64 | 1 |
0.3%
|
|
| 70 | 3 |
0.8%
|
|
| 72 | 5 |
1.3%
|
|
| 74 | 1 |
0.3%
|
|
| 75 | 3 |
0.8%
|
|
| 80 | 5 |
1.3%
|
|
| 90 | 1 |
0.3%
|
|
| 96 | 1 |
0.3%
|
|
| 100 | 7 |
1.9%
|
|
| 120 | 6 |
1.6%
|
|
| 172 | 2 |
0.5%
|
|
| 192 | 2 |
0.5%
|
|
| 200 | 1 |
0.3%
|
|
| 288 | 1 |
0.3%
|
|
| 320 | 1 |
0.3%
|
|
| 388 | 1 |
0.3%
|
|
| Sysmiss | 356 |