| Value | Category | Cases | |
|---|---|---|---|
| 1 | From last 3 months | 73 |
7.1%
|
| 2 | 4-6 months | 99 |
9.7%
|
| 3 | 7-12 months | 90 |
8.8%
|
| 4 | More than a year | 442 |
43.3%
|
| 5 | Don't know/Can't remember | 317 |
31%
|
| Sysmiss | 5650 |