| Value | Category | Cases | |
|---|---|---|---|
| -998 | don't know remember | 0 |
0%
|
| -888 | Other (specify) | 0 |
0%
|
| 1 | <6 months ago | 0 |
0%
|
| 2 | 6 months- one year ago | 4 |
66.7%
|
| 3 | More than a year ago | 2 |
33.3%
|
| Sysmiss | 2240 |