| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 4 weeks | 9 |
0.1%
|
| 2 | 1–3 months | 4 |
0%
|
| 3 | More than 3 months | 5 |
0%
|
| 4 | Don’t know | 12 |
0.1%
|
| Missing value | 12753 |
99.8%
|