| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 159 |
4.4%
|
| 2 | Once a month | 24 |
0.7%
|
| 3 | 2-3 times a month | 40 |
1.1%
|
| 4 | Once a week | 70 |
1.9%
|
| 5 | 2-6 times a week | 231 |
6.3%
|
| 6 | Once a day | 1801 |
49.4%
|
| 7 | Twice or more a day | 1320 |
36.2%
|
| Sysmiss | 52 |