| Value | Category | Cases | |
|---|---|---|---|
| 1 | Days | 31 |
5.8%
|
| 2 | Months | 135 |
25.1%
|
| 3 | Weeks | 38 |
7.1%
|
| 4 | Years | 114 |
21.2%
|
| 5 | Don't know | 176 |
32.7%
|
| 6 | Not Applicable | 30 |
5.6%
|
| 7 | Refused | 4 |
0.7%
|
| 8 | Missing | 10 |
1.9%
|
| Sysmiss | 15711 |