| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | Less than 1 hour | 53 |
28.2%
|
| 1 | 17 |
9%
|
|
| 2 | 42 |
22.3%
|
|
| 3 | 16 |
8.5%
|
|
| 4 | 5 |
2.7%
|
|
| 5 | 10 |
5.3%
|
|
| 6 | 7 |
3.7%
|
|
| 7 | 3 |
1.6%
|
|
| 8 | 12 |
6.4%
|
|
| 10 | 4 |
2.1%
|
|
| 12 | 6 |
3.2%
|
|
| 15 | 4 |
2.1%
|
|
| 16 | 1 |
0.5%
|
|
| 24 | 1 |
0.5%
|
|
| 48 | 1 |
0.5%
|
|
| 50 | 1 |
0.5%
|
|
| 100 | 1 |
0.5%
|
|
| 150 | 3 |
1.6%
|
|
| 168 | 1 |
0.5%
|
|
| Sysmiss | 1112 |