| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 3571 |
19.8%
|
| 2 | Seldom | 8019 |
44.4%
|
| 3 | Quite often | 4000 |
22.2%
|
| 4 | Very often | 2462 |
13.6%
|
| 7 | N/A | 372 | |
| 8 | Invalid | 18 | |
| 9 | Miss | 199 |