| Value | Category | Cases | |
|---|---|---|---|
| 1 | Days | 11 |
0.7%
|
| 2 | Months | 305 |
19.8%
|
| 3 | Weeks | 13 |
0.8%
|
| 4 | Years | 855 |
55.4%
|
| 5 | Don't know | 304 |
19.7%
|
| 6 | Not Applicable | 36 |
2.3%
|
| 7 | Refused | 3 |
0.2%
|
| 8 | Missing | 16 |
1%
|
| Sysmiss | 14706 |