| Value | Category | Cases | |
|---|---|---|---|
| 1 | hour | 1 |
1.9%
|
| 2 | day | 19 |
35.8%
|
| 3 | week | 1 |
1.9%
|
| 4 | month | 31 |
58.5%
|
| 5 | 3 months (quarter) | 0 |
0%
|
| 6 | year | 0 |
0%
|
| 7 | other | 1 |
1.9%
|
| 77 | refused | 0 |
0%
|
| 88 | don't know | 0 |
0%
|
| 99 | missing | 0 |
0%
|
| Sysmiss | 4917 |