| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 56 |
5.4%
|
| 1 | Once or week or less often | 57 |
5.5%
|
| 2 | Several hours a week | 142 |
13.7%
|
| 3 | 1 to 2 hours per day | 351 |
33.9%
|
| 4 | 3 or more hours per day | 430 |
41.5%
|