| Value | Category | Cases | |
|---|---|---|---|
| 1 | Days ago if <7 days | 1 |
4.5%
|
| 2 | Weeks ago if >=7 days <4 weeks) | 3 |
13.6%
|
| 3 | Months ago if >=4 weeks <12 months | 3 |
13.6%
|
| 4 | Years ago, if 1 year or longer | 15 |
68.2%
|
| 98 | Don't know | 0 |
0%
|
| 99 | Refused to answer | 0 |
0%
|
| Sysmiss | 9520 |