| Value | Category | Cases | |
|---|---|---|---|
| 1 | More than once a day | 0 |
0%
|
| 2 | Once daily | 1 |
0.3%
|
| 3 | 5-6 days a week | 3 |
0.9%
|
| 4 | 3-4 days a week | 6 |
1.7%
|
| 5 | 1-2 times a week | 19 |
5.4%
|
| 6 | 2-3 times a month | 23 |
6.6%
|
| 7 | Once a month | 23 |
6.6%
|
| 8 | Less than once a month | 52 |
14.8%
|
| 9 | Never | 224 |
63.8%
|