| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every month | 210 |
4.4%
|
| 2 | No months | 2294 |
48%
|
| 3 | Number of months | 1429 |
29.9%
|
| 8 | Don't know | 818 |
17.1%
|
| 9 | Refused | 25 |
0.5%
|