| Value | Category | Cases | |
|---|---|---|---|
| 1 | Days | 102 |
6.6%
|
| 2 | Months | 421 |
27.3%
|
| 3 | Weeks | 116 |
7.5%
|
| 4 | Years | 473 |
30.7%
|
| 5 | Don't know | 355 |
23%
|
| 6 | Not Applicable | 38 |
2.5%
|
| 7 | Refused | 6 |
0.4%
|
| 8 | Missing | 32 |
2.1%
|
| Sysmiss | 14706 |