| Value | Category | Cases | |
|---|---|---|---|
| 1 | Days | 76 |
3.5%
|
| 2 | Months | 465 |
21.7%
|
| 3 | Weeks | 112 |
5.2%
|
| 4 | Years | 165 |
7.7%
|
| 6 | Don't know | 247 |
11.5%
|
| 7 | Not Applicable | 1050 |
48.9%
|
| 8 | Refused | 12 |
0.6%
|
| 9 | Missing | 20 |
0.9%
|
| Sysmiss | 76209 |