| Value | Category | Cases | |
|---|---|---|---|
| 0 | Missing/Refused/NAD | 286255 |
98.5%
|
| 1 | Almost every month | 1898 |
0.7%
|
| 2 | Some months not all | 2225 |
0.8%
|
| 3 | Only once or twice | 330 |
0.1%
|
| 4 | None | 0 |
0%
|