| Value | Category | Cases | |
|---|---|---|---|
| 1 | Last 1 month | 138 |
6.4%
|
| 2 | 1-3 months | 434 |
20.3%
|
| 3 | 4-6 months | 546 |
25.5%
|
| 4 | 7-12 months | 1022 |
47.8%
|
| e | Skipped in error | 0 | |
| m | Not administered in this wave | 0 | |
| z | Not applicable | 0 |