| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 18 |
1.7%
|
| 1 | Once or week or less often | 75 |
7.2%
|
| 2 | Several hours a week | 152 |
14.7%
|
| 3 | 1 to 2 hours per day | 324 |
31.3%
|
| 4 | 3 or more hours per day | 467 |
45.1%
|