| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 1 month | 282 |
5.6%
|
| 2 | From 1 to 3 months | 80 |
1.6%
|
| 3 | From 3 to 6 months | 82 |
1.6%
|
| 4 | From 6 months to 1 year | 38 |
0.8%
|
| 5 | More than 1 year | 300 |
6%
|
| 98 | Don't know | 18 |
0.4%
|
| 99 | Refuse to answer | 4 |
0.1%
|
| Missing value | 4203 |
83.9%
|