| Value | Category | Cases | |
|---|---|---|---|
| 1 | Everyday | 5 |
0%
|
| 2 | Once a week | 4 |
0%
|
| 3 | Once a month | 386 |
2.8%
|
| 4 | Once a term | 1683 |
12%
|
| 5 | Once a year | 1632 |
11.6%
|
| 6 | Unspecified | 16 |
0.1%
|
| 95 | Missing | 30 |
0.2%
|
| 98 | Don't know | 4 |
0%
|
| 99 | NA | 10251 |
73.2%
|