| Value | Category | Cases | |
|---|---|---|---|
| 1 | Days | 4 |
0.7%
|
| 2 | Months | 131 |
24.3%
|
| 3 | Weeks | 4 |
0.7%
|
| 4 | Years | 211 |
39.2%
|
| 5 | Don't know | 154 |
28.6%
|
| 6 | Not Applicable | 26 |
4.8%
|
| 7 | Refused | 4 |
0.7%
|
| 8 | Missing | 4 |
0.7%
|
| Sysmiss | 15711 |